Finding the Fourth Proportional to 12,435.59, 18,649.52 and 4,113.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,435.59 : 18,649.52 = 4,113.74 : x
2. Step 2: Convert to fraction form
   12,435.59/18,649.52 = 4,113.74/x
3. Step 3: Cross multiply
   12,435.59x = 18,649.52 × 4,113.74
4. Step 4: Simplify right side
   12,435.59x = 76,719,317.89
5. Step 5: Solve for x
   x = 76,719,317.89/12,435.59
6. Step 6: Final answer
   x = 6,169.33