Finding the Fourth Proportional to 8,721.71, 13,080.72 and 2,876.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,721.71 : 13,080.72 = 2,876.93 : x
2. Step 2: Convert to fraction form
   8,721.71/13,080.72 = 2,876.93/x
3. Step 3: Cross multiply
   8,721.71x = 13,080.72 × 2,876.93
4. Step 4: Simplify right side
   8,721.71x = 37,632,315.79
5. Step 5: Solve for x
   x = 37,632,315.79/8,721.71
6. Step 6: Final answer
   x = 4,314.79