Finding the Fourth Proportional to 6,900.22, 9,516.72 and 4,242.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.22 : 9,516.72 = 4,242.88 : x
2. Step 2: Convert to fraction form
   6,900.22/9,516.72 = 4,242.88/x
3. Step 3: Cross multiply
   6,900.22x = 9,516.72 × 4,242.88
4. Step 4: Simplify right side
   6,900.22x = 40,378,300.95
5. Step 5: Solve for x
   x = 40,378,300.95/6,900.22
6. Step 6: Final answer
   x = 5,851.74