Finding the Fourth Proportional to 40,672.77, 60,986.82 and 12,585.00

Step by Step Solution

1. Step 1: Write the proportion equation
   40,672.77 : 60,986.82 = 12,585.00 : x
2. Step 2: Convert to fraction form
   40,672.77/60,986.82 = 12,585.00/x
3. Step 3: Cross multiply
   40,672.77x = 60,986.82 × 12,585.00
4. Step 4: Simplify right side
   40,672.77x = 767,519,405.59
5. Step 5: Solve for x
   x = 767,519,405.59/40,672.77
6. Step 6: Final answer
   x = 18,870.60