Finding the Fourth Proportional to 9,139.25, 12,611.40 and 5,362.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.25 : 12,611.40 = 5,362.02 : x
2. Step 2: Convert to fraction form
   9,139.25/12,611.40 = 5,362.02/x
3. Step 3: Cross multiply
   9,139.25x = 12,611.40 × 5,362.02
4. Step 4: Simplify right side
   9,139.25x = 67,622,511.63
5. Step 5: Solve for x
   x = 67,622,511.63/9,139.25
6. Step 6: Final answer
   x = 7,399.13