Finding the Fourth Proportional to 11,640.48, 16,071.04 and 8,012.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,640.48 : 16,071.04 = 8,012.72 : x
2. Step 2: Convert to fraction form
   11,640.48/16,071.04 = 8,012.72/x
3. Step 3: Cross multiply
   11,640.48x = 16,071.04 × 8,012.72
4. Step 4: Simplify right side
   11,640.48x = 128,772,743.63
5. Step 5: Solve for x
   x = 128,772,743.63/11,640.48
6. Step 6: Final answer
   x = 11,062.49