Finding the Fourth Proportional to 10,395.13, 14,345.49 and 5,679.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,395.13 : 14,345.49 = 5,679.72 : x
2. Step 2: Convert to fraction form
   10,395.13/14,345.49 = 5,679.72/x
3. Step 3: Cross multiply
   10,395.13x = 14,345.49 × 5,679.72
4. Step 4: Simplify right side
   10,395.13x = 81,478,366.46
5. Step 5: Solve for x
   x = 81,478,366.46/10,395.13
6. Step 6: Final answer
   x = 7,838.13