Finding the Fourth Proportional to 10,991.54, 16,487.32 and 7,300.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.54 : 16,487.32 = 7,300.98 : x
2. Step 2: Convert to fraction form
   10,991.54/16,487.32 = 7,300.98/x
3. Step 3: Cross multiply
   10,991.54x = 16,487.32 × 7,300.98
4. Step 4: Simplify right side
   10,991.54x = 120,373,593.57
5. Step 5: Solve for x
   x = 120,373,593.57/10,991.54
6. Step 6: Final answer
   x = 10,951.48