Finding the Fourth Proportional to 21,461.52, 29,615.61 and 12,510.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,461.52 : 29,615.61 = 12,510.48 : x
2. Step 2: Convert to fraction form
   21,461.52/29,615.61 = 12,510.48/x
3. Step 3: Cross multiply
   21,461.52x = 29,615.61 × 12,510.48
4. Step 4: Simplify right side
   21,461.52x = 370,505,496.59
5. Step 5: Solve for x
   x = 370,505,496.59/21,461.52
6. Step 6: Final answer
   x = 17,263.71