Finding the Fourth Proportional to 11,784.42, 17,677.85 and 3,993.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,784.42 : 17,677.85 = 3,993.84 : x
2. Step 2: Convert to fraction form
   11,784.42/17,677.85 = 3,993.84/x
3. Step 3: Cross multiply
   11,784.42x = 17,677.85 × 3,993.84
4. Step 4: Simplify right side
   11,784.42x = 70,602,484.47
5. Step 5: Solve for x
   x = 70,602,484.47/11,784.42
6. Step 6: Final answer
   x = 5,991.17