Finding the Fourth Proportional to 10,403.31, 14,356.62 and 5,687.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,403.31 : 14,356.62 = 5,687.60 : x
2. Step 2: Convert to fraction form
   10,403.31/14,356.62 = 5,687.60/x
3. Step 3: Cross multiply
   10,403.31x = 14,356.62 × 5,687.60
4. Step 4: Simplify right side
   10,403.31x = 81,654,654.35
5. Step 5: Solve for x
   x = 81,654,654.35/10,403.31
6. Step 6: Final answer
   x = 7,848.91