Finding the Fourth Proportional to 10,389.12, 14,337.18 and 5,673.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,389.12 : 14,337.18 = 5,673.60 : x
2. Step 2: Convert to fraction form
   10,389.12/14,337.18 = 5,673.60/x
3. Step 3: Cross multiply
   10,389.12x = 14,337.18 × 5,673.60
4. Step 4: Simplify right side
   10,389.12x = 81,343,424.45
5. Step 5: Solve for x
   x = 81,343,424.45/10,389.12
6. Step 6: Final answer
   x = 7,829.67