Finding the Fourth Proportional to 21,646.42, 29,873.56 and 12,088.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,646.42 : 29,873.56 = 12,088.18 : x
2. Step 2: Convert to fraction form
   21,646.42/29,873.56 = 12,088.18/x
3. Step 3: Cross multiply
   21,646.42x = 29,873.56 × 12,088.18
4. Step 4: Simplify right side
   21,646.42x = 361,116,970.52
5. Step 5: Solve for x
   x = 361,116,970.52/21,646.42
6. Step 6: Final answer
   x = 16,682.53