Finding the Fourth Proportional to 8,773.14, 12,109.32 and 5,415.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,773.14 : 12,109.32 = 5,415.42 : x
2. Step 2: Convert to fraction form
   8,773.14/12,109.32 = 5,415.42/x
3. Step 3: Cross multiply
   8,773.14x = 12,109.32 × 5,415.42
4. Step 4: Simplify right side
   8,773.14x = 65,577,053.71
5. Step 5: Solve for x
   x = 65,577,053.71/8,773.14
6. Step 6: Final answer
   x = 7,474.75