Finding the Fourth Proportional to 11,477.54, 17,180.55 and 8,838.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,477.54 : 17,180.55 = 8,838.21 : x
2. Step 2: Convert to fraction form
   11,477.54/17,180.55 = 8,838.21/x
3. Step 3: Cross multiply
   11,477.54x = 17,180.55 × 8,838.21
4. Step 4: Simplify right side
   11,477.54x = 151,845,308.82
5. Step 5: Solve for x
   x = 151,845,308.82/11,477.54
6. Step 6: Final answer
   x = 13,229.78