Finding the Fourth Proportional to 37,685.73, 56,528.01 and 12,743.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,685.73 : 56,528.01 = 12,743.30 : x
2. Step 2: Convert to fraction form
   37,685.73/56,528.01 = 12,743.30/x
3. Step 3: Cross multiply
   37,685.73x = 56,528.01 × 12,743.30
4. Step 4: Simplify right side
   37,685.73x = 720,353,389.83
5. Step 5: Solve for x
   x = 720,353,389.83/37,685.73
6. Step 6: Final answer
   x = 19,114.75