Finding the Fourth Proportional to 21,300.63, 29,394.86 and 11,740.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,300.63 : 29,394.86 = 11,740.51 : x
2. Step 2: Convert to fraction form
   21,300.63/29,394.86 = 11,740.51/x
3. Step 3: Cross multiply
   21,300.63x = 29,394.86 × 11,740.51
4. Step 4: Simplify right side
   21,300.63x = 345,110,647.78
5. Step 5: Solve for x
   x = 345,110,647.78/21,300.63
6. Step 6: Final answer
   x = 16,201.90