Finding the Fourth Proportional to 10,407.45, 14,362.26 and 5,691.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,407.45 : 14,362.26 = 5,691.72 : x
2. Step 2: Convert to fraction form
   10,407.45/14,362.26 = 5,691.72/x
3. Step 3: Cross multiply
   10,407.45x = 14,362.26 × 5,691.72
4. Step 4: Simplify right side
   10,407.45x = 81,745,962.49
5. Step 5: Solve for x
   x = 81,745,962.49/10,407.45
6. Step 6: Final answer
   x = 7,854.56