Finding the Fourth Proportional to 9,561.30, 14,342.38 and 2,987.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,561.30 : 14,342.38 = 2,987.62 : x
2. Step 2: Convert to fraction form
   9,561.30/14,342.38 = 2,987.62/x
3. Step 3: Cross multiply
   9,561.30x = 14,342.38 × 2,987.62
4. Step 4: Simplify right side
   9,561.30x = 42,849,581.34
5. Step 5: Solve for x
   x = 42,849,581.34/9,561.30
6. Step 6: Final answer
   x = 4,481.56