Finding the Fourth Proportional to 8,690.55, 13,036.73 and 2,847.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,690.55 : 13,036.73 = 2,847.61 : x
2. Step 2: Convert to fraction form
   8,690.55/13,036.73 = 2,847.61/x
3. Step 3: Cross multiply
   8,690.55x = 13,036.73 × 2,847.61
4. Step 4: Simplify right side
   8,690.55x = 37,123,522.72
5. Step 5: Solve for x
   x = 37,123,522.72/8,690.55
6. Step 6: Final answer
   x = 4,271.71