Finding the Fourth Proportional to 9,008.77, 12,426.93 and 5,421.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,008.77 : 12,426.93 = 5,421.25 : x
2. Step 2: Convert to fraction form
   9,008.77/12,426.93 = 5,421.25/x
3. Step 3: Cross multiply
   9,008.77x = 12,426.93 × 5,421.25
4. Step 4: Simplify right side
   9,008.77x = 67,369,494.26
5. Step 5: Solve for x
   x = 67,369,494.26/9,008.77
6. Step 6: Final answer
   x = 7,478.21