Finding the Fourth Proportional to 13,809.34, 19,057.17 and 7,522.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,809.34 : 19,057.17 = 7,522.12 : x
2. Step 2: Convert to fraction form
   13,809.34/19,057.17 = 7,522.12/x
3. Step 3: Cross multiply
   13,809.34x = 19,057.17 × 7,522.12
4. Step 4: Simplify right side
   13,809.34x = 143,350,319.60
5. Step 5: Solve for x
   x = 143,350,319.60/13,809.34
6. Step 6: Final answer
   x = 10,380.68