Finding the Fourth Proportional to 10,144.32, 13,991.25 and 6,510.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,144.32 : 13,991.25 = 6,510.72 : x
2. Step 2: Convert to fraction form
   10,144.32/13,991.25 = 6,510.72/x
3. Step 3: Cross multiply
   10,144.32x = 13,991.25 × 6,510.72
4. Step 4: Simplify right side
   10,144.32x = 91,093,111.20
5. Step 5: Solve for x
   x = 91,093,111.20/10,144.32
6. Step 6: Final answer
   x = 8,979.72