Finding the Fourth Proportional to 13,607.01, 20,418.69 and 5,815.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,607.01 : 20,418.69 = 5,815.82 : x
2. Step 2: Convert to fraction form
   13,607.01/20,418.69 = 5,815.82/x
3. Step 3: Cross multiply
   13,607.01x = 20,418.69 × 5,815.82
4. Step 4: Simplify right side
   13,607.01x = 118,751,476.72
5. Step 5: Solve for x
   x = 118,751,476.72/13,607.01
6. Step 6: Final answer
   x = 8,727.23