Finding the Fourth Proportional to 8,970.72, 12,379.06 and 5,193.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,970.72 : 12,379.06 = 5,193.61 : x
2. Step 2: Convert to fraction form
   8,970.72/12,379.06 = 5,193.61/x
3. Step 3: Cross multiply
   8,970.72x = 12,379.06 × 5,193.61
4. Step 4: Simplify right side
   8,970.72x = 64,292,043.54
5. Step 5: Solve for x
   x = 64,292,043.54/8,970.72
6. Step 6: Final answer
   x = 7,166.88