Finding the Fourth Proportional to 14,568.61, 21,857.51 and 5,208.42

Step by Step Solution

1. Step 1: Write the proportion equation
   14,568.61 : 21,857.51 = 5,208.42 : x
2. Step 2: Convert to fraction form
   14,568.61/21,857.51 = 5,208.42/x
3. Step 3: Cross multiply
   14,568.61x = 21,857.51 × 5,208.42
4. Step 4: Simplify right side
   14,568.61x = 113,843,066.19
5. Step 5: Solve for x
   x = 113,843,066.19/14,568.61
6. Step 6: Final answer
   x = 7,814.27