Finding the Fourth Proportional to 11,677.20, 17,518.59 and 3,886.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,677.20 : 17,518.59 = 3,886.08 : x
2. Step 2: Convert to fraction form
   11,677.20/17,518.59 = 3,886.08/x
3. Step 3: Cross multiply
   11,677.20x = 17,518.59 × 3,886.08
4. Step 4: Simplify right side
   11,677.20x = 68,078,642.23
5. Step 5: Solve for x
   x = 68,078,642.23/11,677.20
6. Step 6: Final answer
   x = 5,830.05