Finding the Fourth Proportional to 11,191.84, 15,441.94 and 7,208.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,191.84 : 15,441.94 = 7,208.16 : x
2. Step 2: Convert to fraction form
   11,191.84/15,441.94 = 7,208.16/x
3. Step 3: Cross multiply
   11,191.84x = 15,441.94 × 7,208.16
4. Step 4: Simplify right side
   11,191.84x = 111,307,925.33
5. Step 5: Solve for x
   x = 111,307,925.33/11,191.84
6. Step 6: Final answer
   x = 9,945.46