Finding the Fourth Proportional to 11,398.71, 15,737.43 and 7,819.66

Step by Step Solution

1. Step 1: Write the proportion equation
   11,398.71 : 15,737.43 = 7,819.66 : x
2. Step 2: Convert to fraction form
   11,398.71/15,737.43 = 7,819.66/x
3. Step 3: Cross multiply
   11,398.71x = 15,737.43 × 7,819.66
4. Step 4: Simplify right side
   11,398.71x = 123,061,351.87
5. Step 5: Solve for x
   x = 123,061,351.87/11,398.71
6. Step 6: Final answer
   x = 10,796.08