Finding the Fourth Proportional to 9,521.94, 13,140.27 and 5,545.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.94 : 13,140.27 = 5,545.74 : x
2. Step 2: Convert to fraction form
   9,521.94/13,140.27 = 5,545.74/x
3. Step 3: Cross multiply
   9,521.94x = 13,140.27 × 5,545.74
4. Step 4: Simplify right side
   9,521.94x = 72,872,520.95
5. Step 5: Solve for x
   x = 72,872,520.95/9,521.94
6. Step 6: Final answer
   x = 7,653.12