Finding the Fourth Proportional to 9,430.56, 13,002.12 and 7,279.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,430.56 : 13,002.12 = 7,279.20 : x
2. Step 2: Convert to fraction form
   9,430.56/13,002.12 = 7,279.20/x
3. Step 3: Cross multiply
   9,430.56x = 13,002.12 × 7,279.20
4. Step 4: Simplify right side
   9,430.56x = 94,645,031.90
5. Step 5: Solve for x
   x = 94,645,031.90/9,430.56
6. Step 6: Final answer
   x = 10,035.99