Finding the Fourth Proportional to 22,491.48, 31,038.04 and 12,419.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,491.48 : 31,038.04 = 12,419.94 : x
2. Step 2: Convert to fraction form
   22,491.48/31,038.04 = 12,419.94/x
3. Step 3: Cross multiply
   22,491.48x = 31,038.04 × 12,419.94
4. Step 4: Simplify right side
   22,491.48x = 385,490,594.52
5. Step 5: Solve for x
   x = 385,490,594.52/22,491.48
6. Step 6: Final answer
   x = 17,139.41