Finding the Fourth Proportional to 8,773.09, 12,109.31 and 5,416.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,773.09 : 12,109.31 = 5,416.45 : x
2. Step 2: Convert to fraction form
   8,773.09/12,109.31 = 5,416.45/x
3. Step 3: Cross multiply
   8,773.09x = 12,109.31 × 5,416.45
4. Step 4: Simplify right side
   8,773.09x = 65,589,445.07
5. Step 5: Solve for x
   x = 65,589,445.07/8,773.09
6. Step 6: Final answer
   x = 7,476.21