Finding the Fourth Proportional to 36,686.39, 55,051.47 and 13,314.65

Step by Step Solution

1. Step 1: Write the proportion equation
   36,686.39 : 55,051.47 = 13,314.65 : x
2. Step 2: Convert to fraction form
   36,686.39/55,051.47 = 13,314.65/x
3. Step 3: Cross multiply
   36,686.39x = 55,051.47 × 13,314.65
4. Step 4: Simplify right side
   36,686.39x = 732,990,779.78
5. Step 5: Solve for x
   x = 732,990,779.78/36,686.39
6. Step 6: Final answer
   x = 19,979.91