Finding the Fourth Proportional to 22,505.02, 31,056.78 and 12,434.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,505.02 : 31,056.78 = 12,434.12 : x
2. Step 2: Convert to fraction form
   22,505.02/31,056.78 = 12,434.12/x
3. Step 3: Cross multiply
   22,505.02x = 31,056.78 × 12,434.12
4. Step 4: Simplify right side
   22,505.02x = 386,163,729.33
5. Step 5: Solve for x
   x = 386,163,729.33/22,505.02
6. Step 6: Final answer
   x = 17,159.00