Finding the Fourth Proportional to 13,760.52, 18,989.56 and 7,472.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,760.52 : 18,989.56 = 7,472.76 : x
2. Step 2: Convert to fraction form
   13,760.52/18,989.56 = 7,472.76/x
3. Step 3: Cross multiply
   13,760.52x = 18,989.56 × 7,472.76
4. Step 4: Simplify right side
   13,760.52x = 141,904,424.39
5. Step 5: Solve for x
   x = 141,904,424.39/13,760.52
6. Step 6: Final answer
   x = 10,312.43