Finding the Fourth Proportional to 10,807.29, 14,916.89 and 7,040.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,807.29 : 14,916.89 = 7,040.79 : x
2. Step 2: Convert to fraction form
   10,807.29/14,916.89 = 7,040.79/x
3. Step 3: Cross multiply
   10,807.29x = 14,916.89 × 7,040.79
4. Step 4: Simplify right side
   10,807.29x = 105,026,654.74
5. Step 5: Solve for x
   x = 105,026,654.74/10,807.29
6. Step 6: Final answer
   x = 9,718.13