Finding the Fourth Proportional to 10,388.90, 14,336.63 and 5,673.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.90 : 14,336.63 = 5,673.15 : x
2. Step 2: Convert to fraction form
   10,388.90/14,336.63 = 5,673.15/x
3. Step 3: Cross multiply
   10,388.90x = 14,336.63 × 5,673.15
4. Step 4: Simplify right side
   10,388.90x = 81,333,845.39
5. Step 5: Solve for x
   x = 81,333,845.39/10,388.90
6. Step 6: Final answer
   x = 7,828.92