Finding the Fourth Proportional to 12,955.59, 19,436.22 and 4,191.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,955.59 : 19,436.22 = 4,191.39 : x
2. Step 2: Convert to fraction form
   12,955.59/19,436.22 = 4,191.39/x
3. Step 3: Cross multiply
   12,955.59x = 19,436.22 × 4,191.39
4. Step 4: Simplify right side
   12,955.59x = 81,464,778.15
5. Step 5: Solve for x
   x = 81,464,778.15/12,955.59
6. Step 6: Final answer
   x = 6,288.00