Finding the Fourth Proportional to 10,985.13, 16,479.83 and 3,587.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,985.13 : 16,479.83 = 3,587.61 : x
2. Step 2: Convert to fraction form
   10,985.13/16,479.83 = 3,587.61/x
3. Step 3: Cross multiply
   10,985.13x = 16,479.83 × 3,587.61
4. Step 4: Simplify right side
   10,985.13x = 59,123,202.91
5. Step 5: Solve for x
   x = 59,123,202.91/10,985.13
6. Step 6: Final answer
   x = 5,382.11