Finding the Fourth Proportional to 21,899.91, 32,845.89 and 7,670.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,899.91 : 32,845.89 = 7,670.48 : x
2. Step 2: Convert to fraction form
   21,899.91/32,845.89 = 7,670.48/x
3. Step 3: Cross multiply
   21,899.91x = 32,845.89 × 7,670.48
4. Step 4: Simplify right side
   21,899.91x = 251,943,578.10
5. Step 5: Solve for x
   x = 251,943,578.10/21,899.91
6. Step 6: Final answer
   x = 11,504.32