Finding the Fourth Proportional to 8,591.23, 12,888.86 and 2,667.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,591.23 : 12,888.86 = 2,667.81 : x
2. Step 2: Convert to fraction form
   8,591.23/12,888.86 = 2,667.81/x
3. Step 3: Cross multiply
   8,591.23x = 12,888.86 × 2,667.81
4. Step 4: Simplify right side
   8,591.23x = 34,385,065.43
5. Step 5: Solve for x
   x = 34,385,065.43/8,591.23
6. Step 6: Final answer
   x = 4,002.34