Finding the Fourth Proportional to 21,381.66, 32,071.83 and 8,901.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,381.66 : 32,071.83 = 8,901.37 : x
2. Step 2: Convert to fraction form
   21,381.66/32,071.83 = 8,901.37/x
3. Step 3: Cross multiply
   21,381.66x = 32,071.83 × 8,901.37
4. Step 4: Simplify right side
   21,381.66x = 285,483,101.78
5. Step 5: Solve for x
   x = 285,483,101.78/21,381.66
6. Step 6: Final answer
   x = 13,351.77