Finding the Fourth Proportional to 12,521.52, 17,278.25 and 7,216.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,521.52 : 17,278.25 = 7,216.29 : x
2. Step 2: Convert to fraction form
   12,521.52/17,278.25 = 7,216.29/x
3. Step 3: Cross multiply
   12,521.52x = 17,278.25 × 7,216.29
4. Step 4: Simplify right side
   12,521.52x = 124,684,826.61
5. Step 5: Solve for x
   x = 124,684,826.61/12,521.52
6. Step 6: Final answer
   x = 9,957.64