Finding the Fourth Proportional to 11,113.16, 16,666.28 and 3,715.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,113.16 : 16,666.28 = 3,715.91 : x
2. Step 2: Convert to fraction form
   11,113.16/16,666.28 = 3,715.91/x
3. Step 3: Cross multiply
   11,113.16x = 16,666.28 × 3,715.91
4. Step 4: Simplify right side
   11,113.16x = 61,930,294.60
5. Step 5: Solve for x
   x = 61,930,294.60/11,113.16
6. Step 6: Final answer
   x = 5,572.70