Finding the Fourth Proportional to 10,638.55, 14,681.39 and 5,858.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,638.55 : 14,681.39 = 5,858.47 : x
2. Step 2: Convert to fraction form
   10,638.55/14,681.39 = 5,858.47/x
3. Step 3: Cross multiply
   10,638.55x = 14,681.39 × 5,858.47
4. Step 4: Simplify right side
   10,638.55x = 86,010,482.87
5. Step 5: Solve for x
   x = 86,010,482.87/10,638.55
6. Step 6: Final answer
   x = 8,084.79