Finding the Fourth Proportional to 12,140.18, 18,196.60 and 6,200.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,140.18 : 18,196.60 = 6,200.45 : x
2. Step 2: Convert to fraction form
   12,140.18/18,196.60 = 6,200.45/x
3. Step 3: Cross multiply
   12,140.18x = 18,196.60 × 6,200.45
4. Step 4: Simplify right side
   12,140.18x = 112,827,108.47
5. Step 5: Solve for x
   x = 112,827,108.47/12,140.18
6. Step 6: Final answer
   x = 9,293.69