Finding the Fourth Proportional to 10,155.72, 14,013.72 and 5,679.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.72 : 14,013.72 = 5,679.48 : x
2. Step 2: Convert to fraction form
   10,155.72/14,013.72 = 5,679.48/x
3. Step 3: Cross multiply
   10,155.72x = 14,013.72 × 5,679.48
4. Step 4: Simplify right side
   10,155.72x = 79,590,642.47
5. Step 5: Solve for x
   x = 79,590,642.47/10,155.72
6. Step 6: Final answer
   x = 7,837.03