Finding the Fourth Proportional to 9,916.79, 13,685.60 and 5,937.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,916.79 : 13,685.60 = 5,937.12 : x
2. Step 2: Convert to fraction form
   9,916.79/13,685.60 = 5,937.12/x
3. Step 3: Cross multiply
   9,916.79x = 13,685.60 × 5,937.12
4. Step 4: Simplify right side
   9,916.79x = 81,253,064.31
5. Step 5: Solve for x
   x = 81,253,064.31/9,916.79
6. Step 6: Final answer
   x = 8,193.49