Finding the Fourth Proportional to 21,407.69, 32,116.41 and 11,546.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,407.69 : 32,116.41 = 11,546.75 : x
2. Step 2: Convert to fraction form
   21,407.69/32,116.41 = 11,546.75/x
3. Step 3: Cross multiply
   21,407.69x = 32,116.41 × 11,546.75
4. Step 4: Simplify right side
   21,407.69x = 370,839,996.59
5. Step 5: Solve for x
   x = 370,839,996.59/21,407.69
6. Step 6: Final answer
   x = 17,322.75