Finding the Fourth Proportional to 8,914.76, 12,300.92 and 5,138.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,914.76 : 12,300.92 = 5,138.08 : x
2. Step 2: Convert to fraction form
   8,914.76/12,300.92 = 5,138.08/x
3. Step 3: Cross multiply
   8,914.76x = 12,300.92 × 5,138.08
4. Step 4: Simplify right side
   8,914.76x = 63,203,111.03
5. Step 5: Solve for x
   x = 63,203,111.03/8,914.76
6. Step 6: Final answer
   x = 7,089.72