Finding the Fourth Proportional to 12,705.48, 19,073.34 and 7,515

Step by Step Solution

1. Step 1: Write the proportion equation
   12,705.48 : 19,073.34 = 7,515 : x
2. Step 2: Convert to fraction form
   12,705.48/19,073.34 = 7,515/x
3. Step 3: Cross multiply
   12,705.48x = 19,073.34 × 7,515
4. Step 4: Simplify right side
   12,705.48x = 143,336,150.10
5. Step 5: Solve for x
   x = 143,336,150.10/12,705.48
6. Step 6: Final answer
   x = 11,281.44