Finding the Fourth Proportional to 8,767.58, 12,100.29 and 4,991.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,767.58 : 12,100.29 = 4,991.96 : x
2. Step 2: Convert to fraction form
   8,767.58/12,100.29 = 4,991.96/x
3. Step 3: Cross multiply
   8,767.58x = 12,100.29 × 4,991.96
4. Step 4: Simplify right side
   8,767.58x = 60,404,175.20
5. Step 5: Solve for x
   x = 60,404,175.20/8,767.58
6. Step 6: Final answer
   x = 6,889.50