Finding the Fourth Proportional to 22,435.25, 30,961.29 and 12,499.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,435.25 : 30,961.29 = 12,499.89 : x
2. Step 2: Convert to fraction form
   22,435.25/30,961.29 = 12,499.89/x
3. Step 3: Cross multiply
   22,435.25x = 30,961.29 × 12,499.89
4. Step 4: Simplify right side
   22,435.25x = 387,012,719.26
5. Step 5: Solve for x
   x = 387,012,719.26/22,435.25
6. Step 6: Final answer
   x = 17,250.21