Finding the Fourth Proportional to 37,710.50, 56,568.50 and 12,742.25

Step by Step Solution

1. Step 1: Write the proportion equation
   37,710.50 : 56,568.50 = 12,742.25 : x
2. Step 2: Convert to fraction form
   37,710.50/56,568.50 = 12,742.25/x
3. Step 3: Cross multiply
   37,710.50x = 56,568.50 × 12,742.25
4. Step 4: Simplify right side
   37,710.50x = 720,809,622.57
5. Step 5: Solve for x
   x = 720,809,622.57/37,710.50
6. Step 6: Final answer
   x = 19,114.30