Finding the Fourth Proportional to 16,385.05, 24,581.91 and 5,140.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,385.05 : 24,581.91 = 5,140.36 : x
2. Step 2: Convert to fraction form
   16,385.05/24,581.91 = 5,140.36/x
3. Step 3: Cross multiply
   16,385.05x = 24,581.91 × 5,140.36
4. Step 4: Simplify right side
   16,385.05x = 126,359,916.89
5. Step 5: Solve for x
   x = 126,359,916.89/16,385.05
6. Step 6: Final answer
   x = 7,711.90