Finding the Fourth Proportional to 13,338.27, 19,985.49 and 4,568.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,338.27 : 19,985.49 = 4,568.40 : x
2. Step 2: Convert to fraction form
   13,338.27/19,985.49 = 4,568.40/x
3. Step 3: Cross multiply
   13,338.27x = 19,985.49 × 4,568.40
4. Step 4: Simplify right side
   13,338.27x = 91,301,712.52
5. Step 5: Solve for x
   x = 91,301,712.52/13,338.27
6. Step 6: Final answer
   x = 6,845.09