Finding the Fourth Proportional to 11,928.89, 16,450.53 and 7,148.13

Step by Step Solution

1. Step 1: Write the proportion equation
   11,928.89 : 16,450.53 = 7,148.13 : x
2. Step 2: Convert to fraction form
   11,928.89/16,450.53 = 7,148.13/x
3. Step 3: Cross multiply
   11,928.89x = 16,450.53 × 7,148.13
4. Step 4: Simplify right side
   11,928.89x = 117,590,527.01
5. Step 5: Solve for x
   x = 117,590,527.01/11,928.89
6. Step 6: Final answer
   x = 9,857.63