Finding the Fourth Proportional to 12,705.48, 19,062.18 and 5,691.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,705.48 : 19,062.18 = 5,691.42 : x
2. Step 2: Convert to fraction form
   12,705.48/19,062.18 = 5,691.42/x
3. Step 3: Cross multiply
   12,705.48x = 19,062.18 × 5,691.42
4. Step 4: Simplify right side
   12,705.48x = 108,490,872.50
5. Step 5: Solve for x
   x = 108,490,872.50/12,705.48
6. Step 6: Final answer
   x = 8,538.90