Finding the Fourth Proportional to 9,410.56, 12,986.58 and 5,218.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.56 : 12,986.58 = 5,218.84 : x
2. Step 2: Convert to fraction form
   9,410.56/12,986.58 = 5,218.84/x
3. Step 3: Cross multiply
   9,410.56x = 12,986.58 × 5,218.84
4. Step 4: Simplify right side
   9,410.56x = 67,774,883.17
5. Step 5: Solve for x
   x = 67,774,883.17/9,410.56
6. Step 6: Final answer
   x = 7,202.00