Finding the Fourth Proportional to 9,523.80, 13,142.55 and 5,275.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,523.80 : 13,142.55 = 5,275.05 : x
2. Step 2: Convert to fraction form
   9,523.80/13,142.55 = 5,275.05/x
3. Step 3: Cross multiply
   9,523.80x = 13,142.55 × 5,275.05
4. Step 4: Simplify right side
   9,523.80x = 69,327,608.38
5. Step 5: Solve for x
   x = 69,327,608.38/9,523.80
6. Step 6: Final answer
   x = 7,279.41