Finding the Fourth Proportional to 2,763.72, 4,118.85 and 2,670.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.72 : 4,118.85 = 2,670.12 : x
2. Step 2: Convert to fraction form
   2,763.72/4,118.85 = 2,670.12/x
3. Step 3: Cross multiply
   2,763.72x = 4,118.85 × 2,670.12
4. Step 4: Simplify right side
   2,763.72x = 10,997,823.76
5. Step 5: Solve for x
   x = 10,997,823.76/2,763.72
6. Step 6: Final answer
   x = 3,979.36