Finding the Fourth Proportional to 9,561.20, 13,194.27 and 5,312.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,561.20 : 13,194.27 = 5,312.25 : x
2. Step 2: Convert to fraction form
   9,561.20/13,194.27 = 5,312.25/x
3. Step 3: Cross multiply
   9,561.20x = 13,194.27 × 5,312.25
4. Step 4: Simplify right side
   9,561.20x = 70,091,260.81
5. Step 5: Solve for x
   x = 70,091,260.81/9,561.20
6. Step 6: Final answer
   x = 7,330.81