Finding the Fourth Proportional to 12,782.34, 17,639.25 and 7,193.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,782.34 : 17,639.25 = 7,193.22 : x
2. Step 2: Convert to fraction form
   12,782.34/17,639.25 = 7,193.22/x
3. Step 3: Cross multiply
   12,782.34x = 17,639.25 × 7,193.22
4. Step 4: Simplify right side
   12,782.34x = 126,883,005.89
5. Step 5: Solve for x
   x = 126,883,005.89/12,782.34
6. Step 6: Final answer
   x = 9,926.43