Finding the Fourth Proportional to 11,778.59, 17,667.62 and 3,458.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,778.59 : 17,667.62 = 3,458.42 : x
2. Step 2: Convert to fraction form
   11,778.59/17,667.62 = 3,458.42/x
3. Step 3: Cross multiply
   11,778.59x = 17,667.62 × 3,458.42
4. Step 4: Simplify right side
   11,778.59x = 61,102,050.36
5. Step 5: Solve for x
   x = 61,102,050.36/11,778.59
6. Step 6: Final answer
   x = 5,187.55