Finding the Fourth Proportional to 7,500.77, 11,256.18 and 3,118.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,500.77 : 11,256.18 = 3,118.22 : x
2. Step 2: Convert to fraction form
   7,500.77/11,256.18 = 3,118.22/x
3. Step 3: Cross multiply
   7,500.77x = 11,256.18 × 3,118.22
4. Step 4: Simplify right side
   7,500.77x = 35,099,245.60
5. Step 5: Solve for x
   x = 35,099,245.60/7,500.77
6. Step 6: Final answer
   x = 4,679.42