Finding the Fourth Proportional to 10,639.04, 14,681.30 and 5,858.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,639.04 : 14,681.30 = 5,858.06 : x
2. Step 2: Convert to fraction form
   10,639.04/14,681.30 = 5,858.06/x
3. Step 3: Cross multiply
   10,639.04x = 14,681.30 × 5,858.06
4. Step 4: Simplify right side
   10,639.04x = 86,003,833.58
5. Step 5: Solve for x
   x = 86,003,833.58/10,639.04
6. Step 6: Final answer
   x = 8,083.80