Finding the Fourth Proportional to 7,321.77, 10,103.88 and 4,177.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,321.77 : 10,103.88 = 4,177.89 : x
2. Step 2: Convert to fraction form
   7,321.77/10,103.88 = 4,177.89/x
3. Step 3: Cross multiply
   7,321.77x = 10,103.88 × 4,177.89
4. Step 4: Simplify right side
   7,321.77x = 42,212,899.21
5. Step 5: Solve for x
   x = 42,212,899.21/7,321.77
6. Step 6: Final answer
   x = 5,765.40