Finding the Fourth Proportional to 8,298.72, 12,376.80 and 8,187.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,298.72 : 12,376.80 = 8,187.48 : x
2. Step 2: Convert to fraction form
   8,298.72/12,376.80 = 8,187.48/x
3. Step 3: Cross multiply
   8,298.72x = 12,376.80 × 8,187.48
4. Step 4: Simplify right side
   8,298.72x = 101,334,802.46
5. Step 5: Solve for x
   x = 101,334,802.46/8,298.72
6. Step 6: Final answer
   x = 12,210.90