Finding the Fourth Proportional to 9,791.59, 13,512.27 and 5,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,791.59 : 13,512.27 = 5,315.50 : x
2. Step 2: Convert to fraction form
   9,791.59/13,512.27 = 5,315.50/x
3. Step 3: Cross multiply
   9,791.59x = 13,512.27 × 5,315.50
4. Step 4: Simplify right side
   9,791.59x = 71,824,471.19
5. Step 5: Solve for x
   x = 71,824,471.19/9,791.59
6. Step 6: Final answer
   x = 7,335.32