Finding the Fourth Proportional to 21,897.18, 30,216.29 and 12,334.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,897.18 : 30,216.29 = 12,334.01 : x
2. Step 2: Convert to fraction form
   21,897.18/30,216.29 = 12,334.01/x
3. Step 3: Cross multiply
   21,897.18x = 30,216.29 × 12,334.01
4. Step 4: Simplify right side
   21,897.18x = 372,688,036.89
5. Step 5: Solve for x
   x = 372,688,036.89/21,897.18
6. Step 6: Final answer
   x = 17,019.91