Finding the Fourth Proportional to 8,770.78, 13,156.98 and 2,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,770.78 : 13,156.98 = 2,530.72 : x
2. Step 2: Convert to fraction form
   8,770.78/13,156.98 = 2,530.72/x
3. Step 3: Cross multiply
   8,770.78x = 13,156.98 × 2,530.72
4. Step 4: Simplify right side
   8,770.78x = 33,296,632.43
5. Step 5: Solve for x
   x = 33,296,632.43/8,770.78
6. Step 6: Final answer
   x = 3,796.31