Finding the Fourth Proportional to 7,848.16, 10,826.40 and 5,485.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,848.16 : 10,826.40 = 5,485.12 : x
2. Step 2: Convert to fraction form
   7,848.16/10,826.40 = 5,485.12/x
3. Step 3: Cross multiply
   7,848.16x = 10,826.40 × 5,485.12
4. Step 4: Simplify right side
   7,848.16x = 59,384,103.17
5. Step 5: Solve for x
   x = 59,384,103.17/7,848.16
6. Step 6: Final answer
   x = 7,566.63