Finding the Fourth Proportional to 10,789.56, 16,186.08 and 3,191.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,789.56 : 16,186.08 = 3,191.61 : x
2. Step 2: Convert to fraction form
   10,789.56/16,186.08 = 3,191.61/x
3. Step 3: Cross multiply
   10,789.56x = 16,186.08 × 3,191.61
4. Step 4: Simplify right side
   10,789.56x = 51,659,654.79
5. Step 5: Solve for x
   x = 51,659,654.79/10,789.56
6. Step 6: Final answer
   x = 4,787.93