Finding the Fourth Proportional to 12,851.12, 19,263.56 and 7,292.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,851.12 : 19,263.56 = 7,292.72 : x
2. Step 2: Convert to fraction form
   12,851.12/19,263.56 = 7,292.72/x
3. Step 3: Cross multiply
   12,851.12x = 19,263.56 × 7,292.72
4. Step 4: Simplify right side
   12,851.12x = 140,483,760.98
5. Step 5: Solve for x
   x = 140,483,760.98/12,851.12
6. Step 6: Final answer
   x = 10,931.63