Finding the Fourth Proportional to 35,940.51, 53,920.49 and 12,567.15

Step by Step Solution

1. Step 1: Write the proportion equation
   35,940.51 : 53,920.49 = 12,567.15 : x
2. Step 2: Convert to fraction form
   35,940.51/53,920.49 = 12,567.15/x
3. Step 3: Cross multiply
   35,940.51x = 53,920.49 × 12,567.15
4. Step 4: Simplify right side
   35,940.51x = 677,626,823.07
5. Step 5: Solve for x
   x = 677,626,823.07/35,940.51
6. Step 6: Final answer
   x = 18,854.12