Finding the Fourth Proportional to 9,715.56, 13,405.95 and 5,523

Step by Step Solution

1. Step 1: Write the proportion equation
   9,715.56 : 13,405.95 = 5,523 : x
2. Step 2: Convert to fraction form
   9,715.56/13,405.95 = 5,523/x
3. Step 3: Cross multiply
   9,715.56x = 13,405.95 × 5,523
4. Step 4: Simplify right side
   9,715.56x = 74,041,061.85
5. Step 5: Solve for x
   x = 74,041,061.85/9,715.56
6. Step 6: Final answer
   x = 7,620.87