Finding the Fourth Proportional to 9,425.55, 13,005.58 and 5,445.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,425.55 : 13,005.58 = 5,445.21 : x
2. Step 2: Convert to fraction form
   9,425.55/13,005.58 = 5,445.21/x
3. Step 3: Cross multiply
   9,425.55x = 13,005.58 × 5,445.21
4. Step 4: Simplify right side
   9,425.55x = 70,818,114.27
5. Step 5: Solve for x
   x = 70,818,114.27/9,425.55
6. Step 6: Final answer
   x = 7,513.42