Finding the Fourth Proportional to 21,505.50, 29,677.59 and 12,074.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,505.50 : 29,677.59 = 12,074.06 : x
2. Step 2: Convert to fraction form
   21,505.50/29,677.59 = 12,074.06/x
3. Step 3: Cross multiply
   21,505.50x = 29,677.59 × 12,074.06
4. Step 4: Simplify right side
   21,505.50x = 358,329,076.51
5. Step 5: Solve for x
   x = 358,329,076.51/21,505.50
6. Step 6: Final answer
   x = 16,662.21