Finding the Fourth Proportional to 9,139.45, 13,715.25 and 3,592.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.45 : 13,715.25 = 3,592.12 : x
2. Step 2: Convert to fraction form
   9,139.45/13,715.25 = 3,592.12/x
3. Step 3: Cross multiply
   9,139.45x = 13,715.25 × 3,592.12
4. Step 4: Simplify right side
   9,139.45x = 49,266,823.83
5. Step 5: Solve for x
   x = 49,266,823.83/9,139.45
6. Step 6: Final answer
   x = 5,390.57