Finding the Fourth Proportional to 8,976.67, 12,388.07 and 5,200.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,976.67 : 12,388.07 = 5,200.45 : x
2. Step 2: Convert to fraction form
   8,976.67/12,388.07 = 5,200.45/x
3. Step 3: Cross multiply
   8,976.67x = 12,388.07 × 5,200.45
4. Step 4: Simplify right side
   8,976.67x = 64,423,538.63
5. Step 5: Solve for x
   x = 64,423,538.63/8,976.67
6. Step 6: Final answer
   x = 7,176.77