Finding the Fourth Proportional to 22,611.39, 31,196.25 and 13,655.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,611.39 : 31,196.25 = 13,655.49 : x
2. Step 2: Convert to fraction form
   22,611.39/31,196.25 = 13,655.49/x
3. Step 3: Cross multiply
   22,611.39x = 31,196.25 × 13,655.49
4. Step 4: Simplify right side
   22,611.39x = 426,000,079.91
5. Step 5: Solve for x
   x = 426,000,079.91/22,611.39
6. Step 6: Final answer
   x = 18,840.07