Finding the Fourth Proportional to 36,870.68, 55,308.86 and 13,183.25

Step by Step Solution

1. Step 1: Write the proportion equation
   36,870.68 : 55,308.86 = 13,183.25 : x
2. Step 2: Convert to fraction form
   36,870.68/55,308.86 = 13,183.25/x
3. Step 3: Cross multiply
   36,870.68x = 55,308.86 × 13,183.25
4. Step 4: Simplify right side
   36,870.68x = 729,150,186.13
5. Step 5: Solve for x
   x = 729,150,186.13/36,870.68
6. Step 6: Final answer
   x = 19,775.88