Finding the Fourth Proportional to 12,858.14, 19,290.42 and 5,067.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,858.14 : 19,290.42 = 5,067.56 : x
2. Step 2: Convert to fraction form
   12,858.14/19,290.42 = 5,067.56/x
3. Step 3: Cross multiply
   12,858.14x = 19,290.42 × 5,067.56
4. Step 4: Simplify right side
   12,858.14x = 97,755,360.78
5. Step 5: Solve for x
   x = 97,755,360.78/12,858.14
6. Step 6: Final answer
   x = 7,602.61