Finding the Fourth Proportional to 9,916.51, 14,869.98 and 5,757.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,916.51 : 14,869.98 = 5,757.57 : x
2. Step 2: Convert to fraction form
   9,916.51/14,869.98 = 5,757.57/x
3. Step 3: Cross multiply
   9,916.51x = 14,869.98 × 5,757.57
4. Step 4: Simplify right side
   9,916.51x = 85,614,950.75
5. Step 5: Solve for x
   x = 85,614,950.75/9,916.51
6. Step 6: Final answer
   x = 8,633.58