Finding the Fourth Proportional to 22,491.06, 31,037.31 and 12,419.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,491.06 : 31,037.31 = 12,419.25 : x
2. Step 2: Convert to fraction form
   22,491.06/31,037.31 = 12,419.25/x
3. Step 3: Cross multiply
   22,491.06x = 31,037.31 × 12,419.25
4. Step 4: Simplify right side
   22,491.06x = 385,460,112.22
5. Step 5: Solve for x
   x = 385,460,112.22/22,491.06
6. Step 6: Final answer
   x = 17,138.37