Finding the Fourth Proportional to 10,557.34, 15,833.31 and 3,981.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,557.34 : 15,833.31 = 3,981.58 : x
2. Step 2: Convert to fraction form
   10,557.34/15,833.31 = 3,981.58/x
3. Step 3: Cross multiply
   10,557.34x = 15,833.31 × 3,981.58
4. Step 4: Simplify right side
   10,557.34x = 63,041,590.43
5. Step 5: Solve for x
   x = 63,041,590.43/10,557.34
6. Step 6: Final answer
   x = 5,971.35