Finding the Fourth Proportional to 11,514.78, 17,267.76 and 3,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,514.78 : 17,267.76 = 3,721.50 : x
2. Step 2: Convert to fraction form
   11,514.78/17,267.76 = 3,721.50/x
3. Step 3: Cross multiply
   11,514.78x = 17,267.76 × 3,721.50
4. Step 4: Simplify right side
   11,514.78x = 64,261,968.84
5. Step 5: Solve for x
   x = 64,261,968.84/11,514.78
6. Step 6: Final answer
   x = 5,580.82