Finding the Fourth Proportional to 21,397.17, 29,522.16 and 12,322.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,397.17 : 29,522.16 = 12,322.15 : x
2. Step 2: Convert to fraction form
   21,397.17/29,522.16 = 12,322.15/x
3. Step 3: Cross multiply
   21,397.17x = 29,522.16 × 12,322.15
4. Step 4: Simplify right side
   21,397.17x = 363,776,566.95
5. Step 5: Solve for x
   x = 363,776,566.95/21,397.17
6. Step 6: Final answer
   x = 17,001.16