Finding the Fourth Proportional to 8,678.59, 13,018.50 and 3,484.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,678.59 : 13,018.50 = 3,484.47 : x
2. Step 2: Convert to fraction form
   8,678.59/13,018.50 = 3,484.47/x
3. Step 3: Cross multiply
   8,678.59x = 13,018.50 × 3,484.47
4. Step 4: Simplify right side
   8,678.59x = 45,362,549.89
5. Step 5: Solve for x
   x = 45,362,549.89/8,678.59
6. Step 6: Final answer
   x = 5,226.95