Finding the Fourth Proportional to 37,766.10, 56,654.55 and 12,807.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,766.10 : 56,654.55 = 12,807.30 : x
2. Step 2: Convert to fraction form
   37,766.10/56,654.55 = 12,807.30/x
3. Step 3: Cross multiply
   37,766.10x = 56,654.55 × 12,807.30
4. Step 4: Simplify right side
   37,766.10x = 725,591,818.22
5. Step 5: Solve for x
   x = 725,591,818.22/37,766.10
6. Step 6: Final answer
   x = 19,212.78