Finding the Fourth Proportional to 8,518.91, 12,774.71 and 2,970.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,518.91 : 12,774.71 = 2,970.61 : x
2. Step 2: Convert to fraction form
   8,518.91/12,774.71 = 2,970.61/x
3. Step 3: Cross multiply
   8,518.91x = 12,774.71 × 2,970.61
4. Step 4: Simplify right side
   8,518.91x = 37,948,656.76
5. Step 5: Solve for x
   x = 37,948,656.76/8,518.91
6. Step 6: Final answer
   x = 4,454.64