Finding the Fourth Proportional to 11,903.94, 16,424.34 and 7,186.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,903.94 : 16,424.34 = 7,186.50 : x
2. Step 2: Convert to fraction form
   11,903.94/16,424.34 = 7,186.50/x
3. Step 3: Cross multiply
   11,903.94x = 16,424.34 × 7,186.50
4. Step 4: Simplify right side
   11,903.94x = 118,033,519.41
5. Step 5: Solve for x
   x = 118,033,519.41/11,903.94
6. Step 6: Final answer
   x = 9,915.50