Finding the Fourth Proportional to 21,948.72, 32,892.72 and 19,019.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,948.72 : 32,892.72 = 19,019.76 : x
2. Step 2: Convert to fraction form
   21,948.72/32,892.72 = 19,019.76/x
3. Step 3: Cross multiply
   21,948.72x = 32,892.72 × 19,019.76
4. Step 4: Simplify right side
   21,948.72x = 625,611,640.15
5. Step 5: Solve for x
   x = 625,611,640.15/21,948.72
6. Step 6: Final answer
   x = 28,503.33