Finding the Fourth Proportional to 9,916.82, 13,685.52 and 5,440.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,916.82 : 13,685.52 = 5,440.86 : x
2. Step 2: Convert to fraction form
   9,916.82/13,685.52 = 5,440.86/x
3. Step 3: Cross multiply
   9,916.82x = 13,685.52 × 5,440.86
4. Step 4: Simplify right side
   9,916.82x = 74,460,998.35
5. Step 5: Solve for x
   x = 74,460,998.35/9,916.82
6. Step 6: Final answer
   x = 7,508.56