Finding the Fourth Proportional to 7,537.52, 10,402.20 and 5,180.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,537.52 : 10,402.20 = 5,180.72 : x
2. Step 2: Convert to fraction form
   7,537.52/10,402.20 = 5,180.72/x
3. Step 3: Cross multiply
   7,537.52x = 10,402.20 × 5,180.72
4. Step 4: Simplify right side
   7,537.52x = 53,890,885.58
5. Step 5: Solve for x
   x = 53,890,885.58/7,537.52
6. Step 6: Final answer
   x = 7,149.68