Finding the Fourth Proportional to 3,178.72, 4,748.68 and 2,530.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,178.72 : 4,748.68 = 2,530.18 : x
2. Step 2: Convert to fraction form
   3,178.72/4,748.68 = 2,530.18/x
3. Step 3: Cross multiply
   3,178.72x = 4,748.68 × 2,530.18
4. Step 4: Simplify right side
   3,178.72x = 12,015,015.16
5. Step 5: Solve for x
   x = 12,015,015.16/3,178.72
6. Step 6: Final answer
   x = 3,779.83