Finding the Fourth Proportional to 9,261.30, 12,780.56 and 5,069.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,261.30 : 12,780.56 = 5,069.54 : x
2. Step 2: Convert to fraction form
   9,261.30/12,780.56 = 5,069.54/x
3. Step 3: Cross multiply
   9,261.30x = 12,780.56 × 5,069.54
4. Step 4: Simplify right side
   9,261.30x = 64,791,560.14
5. Step 5: Solve for x
   x = 64,791,560.14/9,261.30
6. Step 6: Final answer
   x = 6,995.95