Finding the Fourth Proportional to 13,152.66, 19,731.42 and 8,472.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,152.66 : 19,731.42 = 8,472.48 : x
2. Step 2: Convert to fraction form
   13,152.66/19,731.42 = 8,472.48/x
3. Step 3: Cross multiply
   13,152.66x = 19,731.42 × 8,472.48
4. Step 4: Simplify right side
   13,152.66x = 167,174,061.32
5. Step 5: Solve for x
   x = 167,174,061.32/13,152.66
6. Step 6: Final answer
   x = 12,710.29