Finding the Fourth Proportional to 37,739.98, 56,605.50 and 12,779.98

Step by Step Solution

1. Step 1: Write the proportion equation
   37,739.98 : 56,605.50 = 12,779.98 : x
2. Step 2: Convert to fraction form
   37,739.98/56,605.50 = 12,779.98/x
3. Step 3: Cross multiply
   37,739.98x = 56,605.50 × 12,779.98
4. Step 4: Simplify right side
   37,739.98x = 723,417,157.89
5. Step 5: Solve for x
   x = 723,417,157.89/37,739.98
6. Step 6: Final answer
   x = 19,168.46