Finding the Fourth Proportional to 22,557.83, 31,129.01 and 12,486.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,557.83 : 31,129.01 = 12,486.29 : x
2. Step 2: Convert to fraction form
   22,557.83/31,129.01 = 12,486.29/x
3. Step 3: Cross multiply
   22,557.83x = 31,129.01 × 12,486.29
4. Step 4: Simplify right side
   22,557.83x = 388,685,675.02
5. Step 5: Solve for x
   x = 388,685,675.02/22,557.83
6. Step 6: Final answer
   x = 17,230.64