Finding the Fourth Proportional to 11,785.42, 17,679.35 and 3,994.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,785.42 : 17,679.35 = 3,994.84 : x
2. Step 2: Convert to fraction form
   11,785.42/17,679.35 = 3,994.84/x
3. Step 3: Cross multiply
   11,785.42x = 17,679.35 × 3,994.84
4. Step 4: Simplify right side
   11,785.42x = 70,626,174.55
5. Step 5: Solve for x
   x = 70,626,174.55/11,785.42
6. Step 6: Final answer
   x = 5,992.67