Finding the Fourth Proportional to 10,405.32, 15,606.48 and 3,385.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,405.32 : 15,606.48 = 3,385.98 : x
2. Step 2: Convert to fraction form
   10,405.32/15,606.48 = 3,385.98/x
3. Step 3: Cross multiply
   10,405.32x = 15,606.48 × 3,385.98
4. Step 4: Simplify right side
   10,405.32x = 52,843,229.15
5. Step 5: Solve for x
   x = 52,843,229.15/10,405.32
6. Step 6: Final answer
   x = 5,078.48