Finding the Fourth Proportional to 12,265.95, 18,393.39 and 3,498.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,265.95 : 18,393.39 = 3,498.78 : x
2. Step 2: Convert to fraction form
   12,265.95/18,393.39 = 3,498.78/x
3. Step 3: Cross multiply
   12,265.95x = 18,393.39 × 3,498.78
4. Step 4: Simplify right side
   12,265.95x = 64,354,425.06
5. Step 5: Solve for x
   x = 64,354,425.06/12,265.95
6. Step 6: Final answer
   x = 5,246.59