Finding the Fourth Proportional to 10,978.84, 16,459.03 and 8,893.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.84 : 16,459.03 = 8,893.67 : x
2. Step 2: Convert to fraction form
   10,978.84/16,459.03 = 8,893.67/x
3. Step 3: Cross multiply
   10,978.84x = 16,459.03 × 8,893.67
4. Step 4: Simplify right side
   10,978.84x = 146,381,169.39
5. Step 5: Solve for x
   x = 146,381,169.39/10,978.84
6. Step 6: Final answer
   x = 13,333.03