Finding the Fourth Proportional to 9,362.84, 12,920.54 and 5,171

Step by Step Solution

1. Step 1: Write the proportion equation
   9,362.84 : 12,920.54 = 5,171 : x
2. Step 2: Convert to fraction form
   9,362.84/12,920.54 = 5,171/x
3. Step 3: Cross multiply
   9,362.84x = 12,920.54 × 5,171
4. Step 4: Simplify right side
   9,362.84x = 66,812,112.34
5. Step 5: Solve for x
   x = 66,812,112.34/9,362.84
6. Step 6: Final answer
   x = 7,135.88