Finding the Fourth Proportional to 12,577.30, 18,861.00 and 4,570.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,577.30 : 18,861.00 = 4,570.18 : x
2. Step 2: Convert to fraction form
   12,577.30/18,861.00 = 4,570.18/x
3. Step 3: Cross multiply
   12,577.30x = 18,861.00 × 4,570.18
4. Step 4: Simplify right side
   12,577.30x = 86,198,100.69
5. Step 5: Solve for x
   x = 86,198,100.69/12,577.30
6. Step 6: Final answer
   x = 6,853.47