Finding the Fourth Proportional to 12,231.59, 18,339.17 and 5,654.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,231.59 : 18,339.17 = 5,654.18 : x
2. Step 2: Convert to fraction form
   12,231.59/18,339.17 = 5,654.18/x
3. Step 3: Cross multiply
   12,231.59x = 18,339.17 × 5,654.18
4. Step 4: Simplify right side
   12,231.59x = 103,692,848.26
5. Step 5: Solve for x
   x = 103,692,848.26/12,231.59
6. Step 6: Final answer
   x = 8,477.47