Finding the Fourth Proportional to 8,776.17, 13,051.38 and 8,499.33

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776.17 : 13,051.38 = 8,499.33 : x
2. Step 2: Convert to fraction form
   8,776.17/13,051.38 = 8,499.33/x
3. Step 3: Cross multiply
   8,776.17x = 13,051.38 × 8,499.33
4. Step 4: Simplify right side
   8,776.17x = 110,927,985.58
5. Step 5: Solve for x
   x = 110,927,985.58/8,776.17
6. Step 6: Final answer
   x = 12,639.68