Finding the Fourth Proportional to 10,395.76, 14,345.40 and 5,679.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,395.76 : 14,345.40 = 5,679.04 : x
2. Step 2: Convert to fraction form
   10,395.76/14,345.40 = 5,679.04/x
3. Step 3: Cross multiply
   10,395.76x = 14,345.40 × 5,679.04
4. Step 4: Simplify right side
   10,395.76x = 81,468,100.42
5. Step 5: Solve for x
   x = 81,468,100.42/10,395.76
6. Step 6: Final answer
   x = 7,836.67