Finding the Fourth Proportional to 13,520.89, 18,658.79 and 7,552.51

Step by Step Solution

1. Step 1: Write the proportion equation
   13,520.89 : 18,658.79 = 7,552.51 : x
2. Step 2: Convert to fraction form
   13,520.89/18,658.79 = 7,552.51/x
3. Step 3: Cross multiply
   13,520.89x = 18,658.79 × 7,552.51
4. Step 4: Simplify right side
   13,520.89x = 140,920,641.98
5. Step 5: Solve for x
   x = 140,920,641.98/13,520.89
6. Step 6: Final answer
   x = 10,422.44