Finding the Fourth Proportional to 37,654.39, 56,442.17 and 12,685.81

Step by Step Solution

1. Step 1: Write the proportion equation
   37,654.39 : 56,442.17 = 12,685.81 : x
2. Step 2: Convert to fraction form
   37,654.39/56,442.17 = 12,685.81/x
3. Step 3: Cross multiply
   37,654.39x = 56,442.17 × 12,685.81
4. Step 4: Simplify right side
   37,654.39x = 716,014,535.22
5. Step 5: Solve for x
   x = 716,014,535.22/37,654.39
6. Step 6: Final answer
   x = 19,015.43