Finding the Fourth Proportional to 12,843.07, 19,268.72 and 5,453.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,843.07 : 19,268.72 = 5,453.75 : x
2. Step 2: Convert to fraction form
   12,843.07/19,268.72 = 5,453.75/x
3. Step 3: Cross multiply
   12,843.07x = 19,268.72 × 5,453.75
4. Step 4: Simplify right side
   12,843.07x = 105,086,658.09
5. Step 5: Solve for x
   x = 105,086,658.09/12,843.07
6. Step 6: Final answer
   x = 8,182.37