Finding the Fourth Proportional to 9,742.78, 13,444.68 and 5,550.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,742.78 : 13,444.68 = 5,550.22 : x
2. Step 2: Convert to fraction form
   9,742.78/13,444.68 = 5,550.22/x
3. Step 3: Cross multiply
   9,742.78x = 13,444.68 × 5,550.22
4. Step 4: Simplify right side
   9,742.78x = 74,620,931.83
5. Step 5: Solve for x
   x = 74,620,931.83/9,742.78
6. Step 6: Final answer
   x = 7,659.10