Finding the Fourth Proportional to 12,861,323.69, 17,748,581.28 and 6,980,958.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861,323.69 : 17,748,581.28 = 6,980,958.30 : x
2. Step 2: Convert to fraction form
   12,861,323.69/17,748,581.28 = 6,980,958.30/x
3. Step 3: Cross multiply
   12,861,323.69x = 17,748,581.28 × 6,980,958.30
4. Step 4: Simplify right side
   12,861,323.69x = 123,902,105,799,840.62
5. Step 5: Solve for x
   x = 123,902,105,799,840.62/12,861,323.69
6. Step 6: Final answer
   x = 9,633,697.81