Finding the Fourth Proportional to 9,421.59, 13,002.03 and 5,173.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,421.59 : 13,002.03 = 5,173.07 : x
2. Step 2: Convert to fraction form
   9,421.59/13,002.03 = 5,173.07/x
3. Step 3: Cross multiply
   9,421.59x = 13,002.03 × 5,173.07
4. Step 4: Simplify right side
   9,421.59x = 67,260,411.33
5. Step 5: Solve for x
   x = 67,260,411.33/9,421.59
6. Step 6: Final answer
   x = 7,138.97