Finding the Fourth Proportional to 12,861,200.61, 17,723,991.15 and 12,624,843.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861,200.61 : 17,723,991.15 = 12,624,843.02 : x
2. Step 2: Convert to fraction form
   12,861,200.61/17,723,991.15 = 12,624,843.02/x
3. Step 3: Cross multiply
   12,861,200.61x = 17,723,991.15 × 12,624,843.02
4. Step 4: Simplify right side
   12,861,200.61x = 223,762,605,867,999.31
5. Step 5: Solve for x
   x = 223,762,605,867,999.31/12,861,200.61
6. Step 6: Final answer
   x = 17,398,267.29