Finding the Fourth Proportional to 9,713.52, 13,404.42 and 5,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,713.52 : 13,404.42 = 5,521.50 : x
2. Step 2: Convert to fraction form
   9,713.52/13,404.42 = 5,521.50/x
3. Step 3: Cross multiply
   9,713.52x = 13,404.42 × 5,521.50
4. Step 4: Simplify right side
   9,713.52x = 74,012,505.03
5. Step 5: Solve for x
   x = 74,012,505.03/9,713.52
6. Step 6: Final answer
   x = 7,619.53