Finding the Fourth Proportional to 21,493.76, 29,663.01 and 12,544.07

Step by Step Solution

1. Step 1: Write the proportion equation
   21,493.76 : 29,663.01 = 12,544.07 : x
2. Step 2: Convert to fraction form
   21,493.76/29,663.01 = 12,544.07/x
3. Step 3: Cross multiply
   21,493.76x = 29,663.01 × 12,544.07
4. Step 4: Simplify right side
   21,493.76x = 372,094,725.54
5. Step 5: Solve for x
   x = 372,094,725.54/21,493.76
6. Step 6: Final answer
   x = 17,311.76