Finding the Fourth Proportional to 10,388.84, 14,316 and 7,399.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.84 : 14,316 = 7,399.40 : x
2. Step 2: Convert to fraction form
   10,388.84/14,316 = 7,399.40/x
3. Step 3: Cross multiply
   10,388.84x = 14,316 × 7,399.40
4. Step 4: Simplify right side
   10,388.84x = 105,929,810.40
5. Step 5: Solve for x
   x = 105,929,810.40/10,388.84
6. Step 6: Final answer
   x = 10,196.50