Finding the Fourth Proportional to 10,379.31, 15,577.27 and 5,451.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,379.31 : 15,577.27 = 5,451.86 : x
2. Step 2: Convert to fraction form
   10,379.31/15,577.27 = 5,451.86/x
3. Step 3: Cross multiply
   10,379.31x = 15,577.27 × 5,451.86
4. Step 4: Simplify right side
   10,379.31x = 84,925,003.71
5. Step 5: Solve for x
   x = 84,925,003.71/10,379.31
6. Step 6: Final answer
   x = 8,182.14