Finding the Fourth Proportional to 9,721.63, 14,580.82 and 3,146.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,721.63 : 14,580.82 = 3,146.86 : x
2. Step 2: Convert to fraction form
   9,721.63/14,580.82 = 3,146.86/x
3. Step 3: Cross multiply
   9,721.63x = 14,580.82 × 3,146.86
4. Step 4: Simplify right side
   9,721.63x = 45,883,799.23
5. Step 5: Solve for x
   x = 45,883,799.23/9,721.63
6. Step 6: Final answer
   x = 4,719.76