Finding the Fourth Proportional to 37,688.39, 56,509.35 and 12,726.06

Step by Step Solution

1. Step 1: Write the proportion equation
   37,688.39 : 56,509.35 = 12,726.06 : x
2. Step 2: Convert to fraction form
   37,688.39/56,509.35 = 12,726.06/x
3. Step 3: Cross multiply
   37,688.39x = 56,509.35 × 12,726.06
4. Step 4: Simplify right side
   37,688.39x = 719,141,436.89
5. Step 5: Solve for x
   x = 719,141,436.89/37,688.39
6. Step 6: Final answer
   x = 19,081.25