Finding the Fourth Proportional to 12,708.71, 19,062.91 and 5,210.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,708.71 : 19,062.91 = 5,210.59 : x
2. Step 2: Convert to fraction form
   12,708.71/19,062.91 = 5,210.59/x
3. Step 3: Cross multiply
   12,708.71x = 19,062.91 × 5,210.59
4. Step 4: Simplify right side
   12,708.71x = 99,329,008.22
5. Step 5: Solve for x
   x = 99,329,008.22/12,708.71
6. Step 6: Final answer
   x = 7,815.82