Finding the Fourth Proportional to 10,196.45, 14,071.13 and 5,720.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,196.45 : 14,071.13 = 5,720.21 : x
2. Step 2: Convert to fraction form
   10,196.45/14,071.13 = 5,720.21/x
3. Step 3: Cross multiply
   10,196.45x = 14,071.13 × 5,720.21
4. Step 4: Simplify right side
   10,196.45x = 80,489,719.58
5. Step 5: Solve for x
   x = 80,489,719.58/10,196.45
6. Step 6: Final answer
   x = 7,893.90