Finding the Fourth Proportional to 37,688.89, 56,510.10 and 12,726.56

Step by Step Solution

1. Step 1: Write the proportion equation
   37,688.89 : 56,510.10 = 12,726.56 : x
2. Step 2: Convert to fraction form
   37,688.89/56,510.10 = 12,726.56/x
3. Step 3: Cross multiply
   37,688.89x = 56,510.10 × 12,726.56
4. Step 4: Simplify right side
   37,688.89x = 719,179,114.62
5. Step 5: Solve for x
   x = 719,179,114.62/37,688.89
6. Step 6: Final answer
   x = 19,081.99