Finding the Fourth Proportional to 37,728.88, 56,592.30 and 12,768.76

Step by Step Solution

1. Step 1: Write the proportion equation
   37,728.88 : 56,592.30 = 12,768.76 : x
2. Step 2: Convert to fraction form
   37,728.88/56,592.30 = 12,768.76/x
3. Step 3: Cross multiply
   37,728.88x = 56,592.30 × 12,768.76
4. Step 4: Simplify right side
   37,728.88x = 722,613,496.55
5. Step 5: Solve for x
   x = 722,613,496.55/37,728.88
6. Step 6: Final answer
   x = 19,152.79