Finding the Fourth Proportional to 9,057.30, 13,572.51 and 8,072.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.30 : 13,572.51 = 8,072.34 : x
2. Step 2: Convert to fraction form
   9,057.30/13,572.51 = 8,072.34/x
3. Step 3: Cross multiply
   9,057.30x = 13,572.51 × 8,072.34
4. Step 4: Simplify right side
   9,057.30x = 109,561,915.37
5. Step 5: Solve for x
   x = 109,561,915.37/9,057.30
6. Step 6: Final answer
   x = 12,096.53