Finding the Fourth Proportional to 21,528.72, 32,294.52 and 7,490.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,528.72 : 32,294.52 = 7,490.34 : x
2. Step 2: Convert to fraction form
   21,528.72/32,294.52 = 7,490.34/x
3. Step 3: Cross multiply
   21,528.72x = 32,294.52 × 7,490.34
4. Step 4: Simplify right side
   21,528.72x = 241,896,934.94
5. Step 5: Solve for x
   x = 241,896,934.94/21,528.72
6. Step 6: Final answer
   x = 11,236.01