Finding the Fourth Proportional to 8,886.72, 12,263.79 and 5,109.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886.72 : 12,263.79 = 5,109.96 : x
2. Step 2: Convert to fraction form
   8,886.72/12,263.79 = 5,109.96/x
3. Step 3: Cross multiply
   8,886.72x = 12,263.79 × 5,109.96
4. Step 4: Simplify right side
   8,886.72x = 62,667,476.35
5. Step 5: Solve for x
   x = 62,667,476.35/8,886.72
6. Step 6: Final answer
   x = 7,051.81