Finding the Fourth Proportional to 10,155.72, 14,014.72 and 5,679.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.72 : 14,014.72 = 5,679.36 : x
2. Step 2: Convert to fraction form
   10,155.72/14,014.72 = 5,679.36/x
3. Step 3: Cross multiply
   10,155.72x = 14,014.72 × 5,679.36
4. Step 4: Simplify right side
   10,155.72x = 79,594,640.18
5. Step 5: Solve for x
   x = 79,594,640.18/10,155.72
6. Step 6: Final answer
   x = 7,837.42