Finding the Fourth Proportional to 13,314.78, 19,976.01 and 4,308.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,314.78 : 19,976.01 = 4,308.69 : x
2. Step 2: Convert to fraction form
   13,314.78/19,976.01 = 4,308.69/x
3. Step 3: Cross multiply
   13,314.78x = 19,976.01 × 4,308.69
4. Step 4: Simplify right side
   13,314.78x = 86,070,434.53
5. Step 5: Solve for x
   x = 86,070,434.53/13,314.78
6. Step 6: Final answer
   x = 6,464.28