Finding the Fourth Proportional to 9,870.96, 13,622.22 and 5,395.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.96 : 13,622.22 = 5,395.12 : x
2. Step 2: Convert to fraction form
   9,870.96/13,622.22 = 5,395.12/x
3. Step 3: Cross multiply
   9,870.96x = 13,622.22 × 5,395.12
4. Step 4: Simplify right side
   9,870.96x = 73,493,511.57
5. Step 5: Solve for x
   x = 73,493,511.57/9,870.96
6. Step 6: Final answer
   x = 7,445.43