Finding the Fourth Proportional to 10,128.04, 13,975.78 and 6,349.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,128.04 : 13,975.78 = 6,349.99 : x
2. Step 2: Convert to fraction form
   10,128.04/13,975.78 = 6,349.99/x
3. Step 3: Cross multiply
   10,128.04x = 13,975.78 × 6,349.99
4. Step 4: Simplify right side
   10,128.04x = 88,746,091.04
5. Step 5: Solve for x
   x = 88,746,091.04/10,128.04
6. Step 6: Final answer
   x = 8,762.42