Finding the Fourth Proportional to 13,172.42, 19,753.47 and 5,771.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,172.42 : 19,753.47 = 5,771.71 : x
2. Step 2: Convert to fraction form
   13,172.42/19,753.47 = 5,771.71/x
3. Step 3: Cross multiply
   13,172.42x = 19,753.47 × 5,771.71
4. Step 4: Simplify right side
   13,172.42x = 114,011,213.91
5. Step 5: Solve for x
   x = 114,011,213.91/13,172.42
6. Step 6: Final answer
   x = 8,655.30