Finding the Fourth Proportional to 10,422.48, 15,626.16 and 4,872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,422.48 : 15,626.16 = 4,872.72 : x
2. Step 2: Convert to fraction form
   10,422.48/15,626.16 = 4,872.72/x
3. Step 3: Cross multiply
   10,422.48x = 15,626.16 × 4,872.72
4. Step 4: Simplify right side
   10,422.48x = 76,141,902.36
5. Step 5: Solve for x
   x = 76,141,902.36/10,422.48
6. Step 6: Final answer
   x = 7,305.55