Finding the Fourth Proportional to 9,179.31, 12,667.64 and 4,987.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.31 : 12,667.64 = 4,987.83 : x
2. Step 2: Convert to fraction form
   9,179.31/12,667.64 = 4,987.83/x
3. Step 3: Cross multiply
   9,179.31x = 12,667.64 × 4,987.83
4. Step 4: Simplify right side
   9,179.31x = 63,184,009.88
5. Step 5: Solve for x
   x = 63,184,009.88/9,179.31
6. Step 6: Final answer
   x = 6,883.31