Finding the Fourth Proportional to 8,696.22, 12,009.30 and 7,429.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,696.22 : 12,009.30 = 7,429.86 : x
2. Step 2: Convert to fraction form
   8,696.22/12,009.30 = 7,429.86/x
3. Step 3: Cross multiply
   8,696.22x = 12,009.30 × 7,429.86
4. Step 4: Simplify right side
   8,696.22x = 89,227,417.70
5. Step 5: Solve for x
   x = 89,227,417.70/8,696.22
6. Step 6: Final answer
   x = 10,260.48