Finding the Fourth Proportional to 10,300.16, 14,215.92 and 6,111.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,300.16 : 14,215.92 = 6,111.20 : x
2. Step 2: Convert to fraction form
   10,300.16/14,215.92 = 6,111.20/x
3. Step 3: Cross multiply
   10,300.16x = 14,215.92 × 6,111.20
4. Step 4: Simplify right side
   10,300.16x = 86,876,330.30
5. Step 5: Solve for x
   x = 86,876,330.30/10,300.16
6. Step 6: Final answer
   x = 8,434.46