Finding the Fourth Proportional to 9,279.64, 12,806.72 and 5,302.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.64 : 12,806.72 = 5,302.04 : x
2. Step 2: Convert to fraction form
   9,279.64/12,806.72 = 5,302.04/x
3. Step 3: Cross multiply
   9,279.64x = 12,806.72 × 5,302.04
4. Step 4: Simplify right side
   9,279.64x = 67,901,741.71
5. Step 5: Solve for x
   x = 67,901,741.71/9,279.64
6. Step 6: Final answer
   x = 7,317.28