Finding the Fourth Proportional to 9,272.07, 12,801.27 and 7,143.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,272.07 : 12,801.27 = 7,143.59 : x
2. Step 2: Convert to fraction form
   9,272.07/12,801.27 = 7,143.59/x
3. Step 3: Cross multiply
   9,272.07x = 12,801.27 × 7,143.59
4. Step 4: Simplify right side
   9,272.07x = 91,447,024.36
5. Step 5: Solve for x
   x = 91,447,024.36/9,272.07
6. Step 6: Final answer
   x = 9,862.63