Finding the Fourth Proportional to 21,562.25, 29,760.32 and 12,611.95

Step by Step Solution

1. Step 1: Write the proportion equation
   21,562.25 : 29,760.32 = 12,611.95 : x
2. Step 2: Convert to fraction form
   21,562.25/29,760.32 = 12,611.95/x
3. Step 3: Cross multiply
   21,562.25x = 29,760.32 × 12,611.95
4. Step 4: Simplify right side
   21,562.25x = 375,335,667.82
5. Step 5: Solve for x
   x = 375,335,667.82/21,562.25
6. Step 6: Final answer
   x = 17,407.07