Finding the Fourth Proportional to 8,977.35, 12,388.72 and 4,999.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,977.35 : 12,388.72 = 4,999.23 : x
2. Step 2: Convert to fraction form
   8,977.35/12,388.72 = 4,999.23/x
3. Step 3: Cross multiply
   8,977.35x = 12,388.72 × 4,999.23
4. Step 4: Simplify right side
   8,977.35x = 61,934,060.69
5. Step 5: Solve for x
   x = 61,934,060.69/8,977.35
6. Step 6: Final answer
   x = 6,898.92