Finding the Fourth Proportional to 11,934.16, 17,902.88 and 3,613.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,934.16 : 17,902.88 = 3,613.20 : x
2. Step 2: Convert to fraction form
   11,934.16/17,902.88 = 3,613.20/x
3. Step 3: Cross multiply
   11,934.16x = 17,902.88 × 3,613.20
4. Step 4: Simplify right side
   11,934.16x = 64,686,686.02
5. Step 5: Solve for x
   x = 64,686,686.02/11,934.16
6. Step 6: Final answer
   x = 5,420.30