Finding the Fourth Proportional to 9,869.87, 13,620.25 and 5,393.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,869.87 : 13,620.25 = 5,393.52 : x
2. Step 2: Convert to fraction form
   9,869.87/13,620.25 = 5,393.52/x
3. Step 3: Cross multiply
   9,869.87x = 13,620.25 × 5,393.52
4. Step 4: Simplify right side
   9,869.87x = 73,461,090.78
5. Step 5: Solve for x
   x = 73,461,090.78/9,869.87
6. Step 6: Final answer
   x = 7,442.96