Finding the Fourth Proportional to 12,965.48, 19,441.70 and 7,557.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,965.48 : 19,441.70 = 7,557.59 : x
2. Step 2: Convert to fraction form
   12,965.48/19,441.70 = 7,557.59/x
3. Step 3: Cross multiply
   12,965.48x = 19,441.70 × 7,557.59
4. Step 4: Simplify right side
   12,965.48x = 146,932,416.40
5. Step 5: Solve for x
   x = 146,932,416.40/12,965.48
6. Step 6: Final answer
   x = 11,332.58