Finding the Fourth Proportional to 49,986.56, 74,978.22 and 13,050.56

Step by Step Solution

1. Step 1: Write the proportion equation
   49,986.56 : 74,978.22 = 13,050.56 : x
2. Step 2: Convert to fraction form
   49,986.56/74,978.22 = 13,050.56/x
3. Step 3: Cross multiply
   49,986.56x = 74,978.22 × 13,050.56
4. Step 4: Simplify right side
   49,986.56x = 978,507,758.80
5. Step 5: Solve for x
   x = 978,507,758.80/49,986.56
6. Step 6: Final answer
   x = 19,575.42