Finding the Fourth Proportional to 8,747.42, 12,071.40 and 5,021.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.42 : 12,071.40 = 5,021.42 : x
2. Step 2: Convert to fraction form
   8,747.42/12,071.40 = 5,021.42/x
3. Step 3: Cross multiply
   8,747.42x = 12,071.40 × 5,021.42
4. Step 4: Simplify right side
   8,747.42x = 60,615,569.39
5. Step 5: Solve for x
   x = 60,615,569.39/8,747.42
6. Step 6: Final answer
   x = 6,929.54