Finding the Fourth Proportional to 12,783.71, 17,643.93 and 7,194.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.71 : 17,643.93 = 7,194.71 : x
2. Step 2: Convert to fraction form
   12,783.71/17,643.93 = 7,194.71/x
3. Step 3: Cross multiply
   12,783.71x = 17,643.93 × 7,194.71
4. Step 4: Simplify right side
   12,783.71x = 126,942,959.61
5. Step 5: Solve for x
   x = 126,942,959.61/12,783.71
6. Step 6: Final answer
   x = 9,930.06