Finding the Fourth Proportional to 12,892.45, 17,791.52 and 7,227.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.45 : 17,791.52 = 7,227.19 : x
2. Step 2: Convert to fraction form
   12,892.45/17,791.52 = 7,227.19/x
3. Step 3: Cross multiply
   12,892.45x = 17,791.52 × 7,227.19
4. Step 4: Simplify right side
   12,892.45x = 128,582,614.81
5. Step 5: Solve for x
   x = 128,582,614.81/12,892.45
6. Step 6: Final answer
   x = 9,973.48