Finding the Fourth Proportional to 15,613.83, 21,547.25 and 8,540.10

Step by Step Solution

1. Step 1: Write the proportion equation
   15,613.83 : 21,547.25 = 8,540.10 : x
2. Step 2: Convert to fraction form
   15,613.83/21,547.25 = 8,540.10/x
3. Step 3: Cross multiply
   15,613.83x = 21,547.25 × 8,540.10
4. Step 4: Simplify right side
   15,613.83x = 184,015,519.29
5. Step 5: Solve for x
   x = 184,015,519.29/15,613.83
6. Step 6: Final answer
   x = 11,785.42