Finding the Fourth Proportional to 12,185.55, 18,264.31 and 5,597.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.55 : 18,264.31 = 5,597.90 : x
2. Step 2: Convert to fraction form
   12,185.55/18,264.31 = 5,597.90/x
3. Step 3: Cross multiply
   12,185.55x = 18,264.31 × 5,597.90
4. Step 4: Simplify right side
   12,185.55x = 102,241,707.12
5. Step 5: Solve for x
   x = 102,241,707.12/12,185.55
6. Step 6: Final answer
   x = 8,390.41