Finding the Fourth Proportional to 8,678.71, 13,034.16 and 4,521.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,678.71 : 13,034.16 = 4,521.59 : x
2. Step 2: Convert to fraction form
   8,678.71/13,034.16 = 4,521.59/x
3. Step 3: Cross multiply
   8,678.71x = 13,034.16 × 4,521.59
4. Step 4: Simplify right side
   8,678.71x = 58,935,127.51
5. Step 5: Solve for x
   x = 58,935,127.51/8,678.71
6. Step 6: Final answer
   x = 6,790.77