Finding the Fourth Proportional to 8,971.34, 12,379.34 and 4,992.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,971.34 : 12,379.34 = 4,992.18 : x
2. Step 2: Convert to fraction form
   8,971.34/12,379.34 = 4,992.18/x
3. Step 3: Cross multiply
   8,971.34x = 12,379.34 × 4,992.18
4. Step 4: Simplify right side
   8,971.34x = 61,799,893.56
5. Step 5: Solve for x
   x = 61,799,893.56/8,971.34
6. Step 6: Final answer
   x = 6,888.59