Finding the Fourth Proportional to 11,677.91, 17,505.72 and 3,881.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,677.91 : 17,505.72 = 3,881.25 : x
2. Step 2: Convert to fraction form
   11,677.91/17,505.72 = 3,881.25/x
3. Step 3: Cross multiply
   11,677.91x = 17,505.72 × 3,881.25
4. Step 4: Simplify right side
   11,677.91x = 67,944,075.75
5. Step 5: Solve for x
   x = 67,944,075.75/11,677.91
6. Step 6: Final answer
   x = 5,818.17