Finding the Fourth Proportional to 9,434.49, 13,021.20 and 5,458.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,434.49 : 13,021.20 = 5,458.02 : x
2. Step 2: Convert to fraction form
   9,434.49/13,021.20 = 5,458.02/x
3. Step 3: Cross multiply
   9,434.49x = 13,021.20 × 5,458.02
4. Step 4: Simplify right side
   9,434.49x = 71,069,970.02
5. Step 5: Solve for x
   x = 71,069,970.02/9,434.49
6. Step 6: Final answer
   x = 7,533.00