Finding the Fourth Proportional to 21,483.20, 29,646.72 and 12,051.77

Step by Step Solution

1. Step 1: Write the proportion equation
   21,483.20 : 29,646.72 = 12,051.77 : x
2. Step 2: Convert to fraction form
   21,483.20/29,646.72 = 12,051.77/x
3. Step 3: Cross multiply
   21,483.20x = 29,646.72 × 12,051.77
4. Step 4: Simplify right side
   21,483.20x = 357,295,302.46
5. Step 5: Solve for x
   x = 357,295,302.46/21,483.20
6. Step 6: Final answer
   x = 16,631.39