Finding the Fourth Proportional to 9,715.26, 13,407.18 and 5,523.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,715.26 : 13,407.18 = 5,523.50 : x
2. Step 2: Convert to fraction form
   9,715.26/13,407.18 = 5,523.50/x
3. Step 3: Cross multiply
   9,715.26x = 13,407.18 × 5,523.50
4. Step 4: Simplify right side
   9,715.26x = 74,054,558.73
5. Step 5: Solve for x
   x = 74,054,558.73/9,715.26
6. Step 6: Final answer
   x = 7,622.50