Finding the Fourth Proportional to 8,620.51, 12,931.51 and 2,380.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,620.51 : 12,931.51 = 2,380.52 : x
2. Step 2: Convert to fraction form
   8,620.51/12,931.51 = 2,380.52/x
3. Step 3: Cross multiply
   8,620.51x = 12,931.51 × 2,380.52
4. Step 4: Simplify right side
   8,620.51x = 30,783,718.19
5. Step 5: Solve for x
   x = 30,783,718.19/8,620.51
6. Step 6: Final answer
   x = 3,570.99