Finding the Fourth Proportional to 9,179.31, 12,667.49 and 4,987.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.31 : 12,667.49 = 4,987.56 : x
2. Step 2: Convert to fraction form
   9,179.31/12,667.49 = 4,987.56/x
3. Step 3: Cross multiply
   9,179.31x = 12,667.49 × 4,987.56
4. Step 4: Simplify right side
   9,179.31x = 63,179,866.42
5. Step 5: Solve for x
   x = 63,179,866.42/9,179.31
6. Step 6: Final answer
   x = 6,882.86