Finding the Fourth Proportional to 21,308.00, 29,405.77 and 11,748.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,308.00 : 29,405.77 = 11,748.31 : x
2. Step 2: Convert to fraction form
   21,308.00/29,405.77 = 11,748.31/x
3. Step 3: Cross multiply
   21,308.00x = 29,405.77 × 11,748.31
4. Step 4: Simplify right side
   21,308.00x = 345,467,998.86
5. Step 5: Solve for x
   x = 345,467,998.86/21,308.00
6. Step 6: Final answer
   x = 16,213.07