Finding the Fourth Proportional to 9,179.68, 12,667.86 and 4,987.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.68 : 12,667.86 = 4,987.92 : x
2. Step 2: Convert to fraction form
   9,179.68/12,667.86 = 4,987.92/x
3. Step 3: Cross multiply
   9,179.68x = 12,667.86 × 4,987.92
4. Step 4: Simplify right side
   9,179.68x = 63,186,272.25
5. Step 5: Solve for x
   x = 63,186,272.25/9,179.68
6. Step 6: Final answer
   x = 6,883.28