Finding the Fourth Proportional to 10,196.61, 14,071.47 and 5,720.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,196.61 : 14,071.47 = 5,720.10 : x
2. Step 2: Convert to fraction form
   10,196.61/14,071.47 = 5,720.10/x
3. Step 3: Cross multiply
   10,196.61x = 14,071.47 × 5,720.10
4. Step 4: Simplify right side
   10,196.61x = 80,490,215.55
5. Step 5: Solve for x
   x = 80,490,215.55/10,196.61
6. Step 6: Final answer
   x = 7,893.82