Finding the Fourth Proportional to 37,978.56, 56,967.66 and 13,018.68

Step by Step Solution

1. Step 1: Write the proportion equation
   37,978.56 : 56,967.66 = 13,018.68 : x
2. Step 2: Convert to fraction form
   37,978.56/56,967.66 = 13,018.68/x
3. Step 3: Cross multiply
   37,978.56x = 56,967.66 × 13,018.68
4. Step 4: Simplify right side
   37,978.56x = 741,643,735.89
5. Step 5: Solve for x
   x = 741,643,735.89/37,978.56
6. Step 6: Final answer
   x = 19,527.96