Finding the Fourth Proportional to 12,894.72, 17,796.19 and 7,231.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,894.72 : 17,796.19 = 7,231.00 : x
2. Step 2: Convert to fraction form
   12,894.72/17,796.19 = 7,231.00/x
3. Step 3: Cross multiply
   12,894.72x = 17,796.19 × 7,231.00
4. Step 4: Simplify right side
   12,894.72x = 128,684,160.91
5. Step 5: Solve for x
   x = 128,684,160.91/12,894.72
6. Step 6: Final answer
   x = 9,979.60