Finding the Fourth Proportional to 10,618.72, 14,654.34 and 6,142.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,618.72 : 14,654.34 = 6,142.24 : x
2. Step 2: Convert to fraction form
   10,618.72/14,654.34 = 6,142.24/x
3. Step 3: Cross multiply
   10,618.72x = 14,654.34 × 6,142.24
4. Step 4: Simplify right side
   10,618.72x = 90,010,473.32
5. Step 5: Solve for x
   x = 90,010,473.32/10,618.72
6. Step 6: Final answer
   x = 8,476.58