Finding the Fourth Proportional to 9,056.22, 12,498.74 and 5,279.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,056.22 : 12,498.74 = 5,279.55 : x
2. Step 2: Convert to fraction form
   9,056.22/12,498.74 = 5,279.55/x
3. Step 3: Cross multiply
   9,056.22x = 12,498.74 × 5,279.55
4. Step 4: Simplify right side
   9,056.22x = 65,987,696.37
5. Step 5: Solve for x
   x = 65,987,696.37/9,056.22
6. Step 6: Final answer
   x = 7,286.45