Finding the Fourth Proportional to 11,775.88, 17,662.72 and 3,984.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,775.88 : 17,662.72 = 3,984.76 : x
2. Step 2: Convert to fraction form
   11,775.88/17,662.72 = 3,984.76/x
3. Step 3: Cross multiply
   11,775.88x = 17,662.72 × 3,984.76
4. Step 4: Simplify right side
   11,775.88x = 70,381,700.15
5. Step 5: Solve for x
   x = 70,381,700.15/11,775.88
6. Step 6: Final answer
   x = 5,976.77