Finding the Fourth Proportional to 14,128.96, 21,196.18 and 5,370.04

Step by Step Solution

1. Step 1: Write the proportion equation
   14,128.96 : 21,196.18 = 5,370.04 : x
2. Step 2: Convert to fraction form
   14,128.96/21,196.18 = 5,370.04/x
3. Step 3: Cross multiply
   14,128.96x = 21,196.18 × 5,370.04
4. Step 4: Simplify right side
   14,128.96x = 113,824,334.45
5. Step 5: Solve for x
   x = 113,824,334.45/14,128.96
6. Step 6: Final answer
   x = 8,056.10