Finding the Fourth Proportional to 11,374.52, 15,687.56 and 9,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,374.52 : 15,687.56 = 9,550.50 : x
2. Step 2: Convert to fraction form
   11,374.52/15,687.56 = 9,550.50/x
3. Step 3: Cross multiply
   11,374.52x = 15,687.56 × 9,550.50
4. Step 4: Simplify right side
   11,374.52x = 149,823,994.03
5. Step 5: Solve for x
   x = 149,823,994.03/11,374.52
6. Step 6: Final answer
   x = 13,171.90