Finding the Fourth Proportional to 9,401.76, 12,973.44 and 5,422.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.76 : 12,973.44 = 5,422.56 : x
2. Step 2: Convert to fraction form
   9,401.76/12,973.44 = 5,422.56/x
3. Step 3: Cross multiply
   9,401.76x = 12,973.44 × 5,422.56
4. Step 4: Simplify right side
   9,401.76x = 70,349,256.81
5. Step 5: Solve for x
   x = 70,349,256.81/9,401.76
6. Step 6: Final answer
   x = 7,482.56