Finding the Fourth Proportional to 10,670.21, 14,724.89 and 5,890.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,670.21 : 14,724.89 = 5,890.15 : x
2. Step 2: Convert to fraction form
   10,670.21/14,724.89 = 5,890.15/x
3. Step 3: Cross multiply
   10,670.21x = 14,724.89 × 5,890.15
4. Step 4: Simplify right side
   10,670.21x = 86,731,821.88
5. Step 5: Solve for x
   x = 86,731,821.88/10,670.21
6. Step 6: Final answer
   x = 8,128.41