Finding the Fourth Proportional to 9,646.42, 13,319.61 and 7,404.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,646.42 : 13,319.61 = 7,404.74 : x
2. Step 2: Convert to fraction form
   9,646.42/13,319.61 = 7,404.74/x
3. Step 3: Cross multiply
   9,646.42x = 13,319.61 × 7,404.74
4. Step 4: Simplify right side
   9,646.42x = 98,628,248.95
5. Step 5: Solve for x
   x = 98,628,248.95/9,646.42
6. Step 6: Final answer
   x = 10,224.34