Finding the Fourth Proportional to 8,770.95, 13,123.22 and 4,878.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,770.95 : 13,123.22 = 4,878.09 : x
2. Step 2: Convert to fraction form
   8,770.95/13,123.22 = 4,878.09/x
3. Step 3: Cross multiply
   8,770.95x = 13,123.22 × 4,878.09
4. Step 4: Simplify right side
   8,770.95x = 64,016,223.86
5. Step 5: Solve for x
   x = 64,016,223.86/8,770.95
6. Step 6: Final answer
   x = 7,298.66