Finding the Fourth Proportional to 9,622.28, 13,279.12 and 5,430.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,622.28 : 13,279.12 = 5,430.52 : x
2. Step 2: Convert to fraction form
   9,622.28/13,279.12 = 5,430.52/x
3. Step 3: Cross multiply
   9,622.28x = 13,279.12 × 5,430.52
4. Step 4: Simplify right side
   9,622.28x = 72,112,526.74
5. Step 5: Solve for x
   x = 72,112,526.74/9,622.28
6. Step 6: Final answer
   x = 7,494.33