Finding the Fourth Proportional to 10,356.90, 15,521.49 and 3,776.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,356.90 : 15,521.49 = 3,776.88 : x
2. Step 2: Convert to fraction form
   10,356.90/15,521.49 = 3,776.88/x
3. Step 3: Cross multiply
   10,356.90x = 15,521.49 × 3,776.88
4. Step 4: Simplify right side
   10,356.90x = 58,622,805.15
5. Step 5: Solve for x
   x = 58,622,805.15/10,356.90
6. Step 6: Final answer
   x = 5,660.27