Finding the Fourth Proportional to 10,403.15, 14,356.26 and 5,687.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,403.15 : 14,356.26 = 5,687.42 : x
2. Step 2: Convert to fraction form
   10,403.15/14,356.26 = 5,687.42/x
3. Step 3: Cross multiply
   10,403.15x = 14,356.26 × 5,687.42
4. Step 4: Simplify right side
   10,403.15x = 81,650,080.25
5. Step 5: Solve for x
   x = 81,650,080.25/10,403.15
6. Step 6: Final answer
   x = 7,848.59