Finding the Fourth Proportional to 9,622.42, 13,278.69 and 5,430.64

Step by Step Solution

1. Step 1: Write the proportion equation
   9,622.42 : 13,278.69 = 5,430.64 : x
2. Step 2: Convert to fraction form
   9,622.42/13,278.69 = 5,430.64/x
3. Step 3: Cross multiply
   9,622.42x = 13,278.69 × 5,430.64
4. Step 4: Simplify right side
   9,622.42x = 72,111,785.06
5. Step 5: Solve for x
   x = 72,111,785.06/9,622.42
6. Step 6: Final answer
   x = 7,494.14