Finding the Fourth Proportional to 9,410.28, 12,985.86 and 5,218.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.28 : 12,985.86 = 5,218.92 : x
2. Step 2: Convert to fraction form
   9,410.28/12,985.86 = 5,218.92/x
3. Step 3: Cross multiply
   9,410.28x = 12,985.86 × 5,218.92
4. Step 4: Simplify right side
   9,410.28x = 67,772,164.47
5. Step 5: Solve for x
   x = 67,772,164.47/9,410.28
6. Step 6: Final answer
   x = 7,201.93