Finding the Fourth Proportional to 8,061.29, 12,089.51 and 3,129.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.29 : 12,089.51 = 3,129.83 : x
2. Step 2: Convert to fraction form
   8,061.29/12,089.51 = 3,129.83/x
3. Step 3: Cross multiply
   8,061.29x = 12,089.51 × 3,129.83
4. Step 4: Simplify right side
   8,061.29x = 37,838,095.43
5. Step 5: Solve for x
   x = 37,838,095.43/8,061.29
6. Step 6: Final answer
   x = 4,693.80