Finding the Fourth Proportional to 12,957.61, 19,462.41 and 12,532.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,957.61 : 19,462.41 = 12,532.06 : x
2. Step 2: Convert to fraction form
   12,957.61/19,462.41 = 12,532.06/x
3. Step 3: Cross multiply
   12,957.61x = 19,462.41 × 12,532.06
4. Step 4: Simplify right side
   12,957.61x = 243,904,089.86
5. Step 5: Solve for x
   x = 243,904,089.86/12,957.61
6. Step 6: Final answer
   x = 18,823.23