Finding the Fourth Proportional to 9,181.60, 12,670.62 and 5,404.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,181.60 : 12,670.62 = 5,404.77 : x
2. Step 2: Convert to fraction form
   9,181.60/12,670.62 = 5,404.77/x
3. Step 3: Cross multiply
   9,181.60x = 12,670.62 × 5,404.77
4. Step 4: Simplify right side
   9,181.60x = 68,481,786.86
5. Step 5: Solve for x
   x = 68,481,786.86/9,181.60
6. Step 6: Final answer
   x = 7,458.59