Finding the Fourth Proportional to 12,545,981.87, 18,811,401.53 and 5,628,200.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,545,981.87 : 18,811,401.53 = 5,628,200.15 : x
2. Step 2: Convert to fraction form
   12,545,981.87/18,811,401.53 = 5,628,200.15/x
3. Step 3: Cross multiply
   12,545,981.87x = 18,811,401.53 × 5,628,200.15
4. Step 4: Simplify right side
   12,545,981.87x = 105,874,332,931,743.72
5. Step 5: Solve for x
   x = 105,874,332,931,743.72/12,545,981.87
6. Step 6: Final answer
   x = 8,438,903.71