Finding the Fourth Proportional to 21,068.68, 31,601.76 and 9,222.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,068.68 : 31,601.76 = 9,222.16 : x
2. Step 2: Convert to fraction form
   21,068.68/31,601.76 = 9,222.16/x
3. Step 3: Cross multiply
   21,068.68x = 31,601.76 × 9,222.16
4. Step 4: Simplify right side
   21,068.68x = 291,436,487.00
5. Step 5: Solve for x
   x = 291,436,487.00/21,068.68
6. Step 6: Final answer
   x = 13,832.69