Finding the Fourth Proportional to 12,875.22, 17,767.72 and 7,209.95

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875.22 : 17,767.72 = 7,209.95 : x
2. Step 2: Convert to fraction form
   12,875.22/17,767.72 = 7,209.95/x
3. Step 3: Cross multiply
   12,875.22x = 17,767.72 × 7,209.95
4. Step 4: Simplify right side
   12,875.22x = 128,104,372.81
5. Step 5: Solve for x
   x = 128,104,372.81/12,875.22
6. Step 6: Final answer
   x = 9,949.68