Finding the Fourth Proportional to 13,940.71, 20,902.19 and 5,931.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,940.71 : 20,902.19 = 5,931.18 : x
2. Step 2: Convert to fraction form
   13,940.71/20,902.19 = 5,931.18/x
3. Step 3: Cross multiply
   13,940.71x = 20,902.19 × 5,931.18
4. Step 4: Simplify right side
   13,940.71x = 123,974,621.63
5. Step 5: Solve for x
   x = 123,974,621.63/13,940.71
6. Step 6: Final answer
   x = 8,892.99