Finding the Fourth Proportional to 10,403.78, 14,357.32 and 5,688.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,403.78 : 14,357.32 = 5,688.05 : x
2. Step 2: Convert to fraction form
   10,403.78/14,357.32 = 5,688.05/x
3. Step 3: Cross multiply
   10,403.78x = 14,357.32 × 5,688.05
4. Step 4: Simplify right side
   10,403.78x = 81,665,068.02
5. Step 5: Solve for x
   x = 81,665,068.02/10,403.78
6. Step 6: Final answer
   x = 7,849.56