Finding the Fourth Proportional to 9,019.61, 12,439.01 and 5,662.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.61 : 12,439.01 = 5,662.74 : x
2. Step 2: Convert to fraction form
   9,019.61/12,439.01 = 5,662.74/x
3. Step 3: Cross multiply
   9,019.61x = 12,439.01 × 5,662.74
4. Step 4: Simplify right side
   9,019.61x = 70,438,851.17
5. Step 5: Solve for x
   x = 70,438,851.17/9,019.61
6. Step 6: Final answer
   x = 7,809.52