Finding the Fourth Proportional to 8,975.45, 12,384.32 and 5,436.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,975.45 : 12,384.32 = 5,436.61 : x
2. Step 2: Convert to fraction form
   8,975.45/12,384.32 = 5,436.61/x
3. Step 3: Cross multiply
   8,975.45x = 12,384.32 × 5,436.61
4. Step 4: Simplify right side
   8,975.45x = 67,328,659.81
5. Step 5: Solve for x
   x = 67,328,659.81/8,975.45
6. Step 6: Final answer
   x = 7,501.42