Finding the Fourth Proportional to 6,142.91, 8,477.56 and 5,787.52

Step by Step Solution

1. Step 1: Write the proportion equation
   6,142.91 : 8,477.56 = 5,787.52 : x
2. Step 2: Convert to fraction form
   6,142.91/8,477.56 = 5,787.52/x
3. Step 3: Cross multiply
   6,142.91x = 8,477.56 × 5,787.52
4. Step 4: Simplify right side
   6,142.91x = 49,064,034.09
5. Step 5: Solve for x
   x = 49,064,034.09/6,142.91
6. Step 6: Final answer
   x = 7,987.11