Finding the Fourth Proportional to 9,179.94, 12,667.96 and 4,988.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.94 : 12,667.96 = 4,988.10 : x
2. Step 2: Convert to fraction form
   9,179.94/12,667.96 = 4,988.10/x
3. Step 3: Cross multiply
   9,179.94x = 12,667.96 × 4,988.10
4. Step 4: Simplify right side
   9,179.94x = 63,189,051.28
5. Step 5: Solve for x
   x = 63,189,051.28/9,179.94
6. Step 6: Final answer
   x = 6,883.38