Finding the Fourth Proportional to 5,385.88, 7,436.82 and 3,498.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,385.88 : 7,436.82 = 3,498.40 : x
2. Step 2: Convert to fraction form
   5,385.88/7,436.82 = 3,498.40/x
3. Step 3: Cross multiply
   5,385.88x = 7,436.82 × 3,498.40
4. Step 4: Simplify right side
   5,385.88x = 26,016,971.09
5. Step 5: Solve for x
   x = 26,016,971.09/5,385.88
6. Step 6: Final answer
   x = 4,830.59