Finding the Fourth Proportional to 11,887.98, 16,422.50 and 9,494.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,887.98 : 16,422.50 = 9,494.81 : x
2. Step 2: Convert to fraction form
   11,887.98/16,422.50 = 9,494.81/x
3. Step 3: Cross multiply
   11,887.98x = 16,422.50 × 9,494.81
4. Step 4: Simplify right side
   11,887.98x = 155,928,428.69
5. Step 5: Solve for x
   x = 155,928,428.69/11,887.98
6. Step 6: Final answer
   x = 13,116.48