Finding the Fourth Proportional to 21,229.27, 31,848.41 and 7,188.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,229.27 : 31,848.41 = 7,188.62 : x
2. Step 2: Convert to fraction form
   21,229.27/31,848.41 = 7,188.62/x
3. Step 3: Cross multiply
   21,229.27x = 31,848.41 × 7,188.62
4. Step 4: Simplify right side
   21,229.27x = 228,946,001.53
5. Step 5: Solve for x
   x = 228,946,001.53/21,229.27
6. Step 6: Final answer
   x = 10,784.45