Finding the Fourth Proportional to 10,521.38, 15,776.58 and 3,124.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,521.38 : 15,776.58 = 3,124.82 : x
2. Step 2: Convert to fraction form
   10,521.38/15,776.58 = 3,124.82/x
3. Step 3: Cross multiply
   10,521.38x = 15,776.58 × 3,124.82
4. Step 4: Simplify right side
   10,521.38x = 49,298,972.72
5. Step 5: Solve for x
   x = 49,298,972.72/10,521.38
6. Step 6: Final answer
   x = 4,685.60