Finding the Fourth Proportional to 11,781.36, 17,662.32 and 4,860.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,781.36 : 17,662.32 = 4,860.72 : x
2. Step 2: Convert to fraction form
   11,781.36/17,662.32 = 4,860.72/x
3. Step 3: Cross multiply
   11,781.36x = 17,662.32 × 4,860.72
4. Step 4: Simplify right side
   11,781.36x = 85,851,592.07
5. Step 5: Solve for x
   x = 85,851,592.07/11,781.36
6. Step 6: Final answer
   x = 7,287.07