Finding the Fourth Proportional to 7,154.02, 9,870.94 and 4,321.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,154.02 : 9,870.94 = 4,321.86 : x
2. Step 2: Convert to fraction form
   7,154.02/9,870.94 = 4,321.86/x
3. Step 3: Cross multiply
   7,154.02x = 9,870.94 × 4,321.86
4. Step 4: Simplify right side
   7,154.02x = 42,660,820.75
5. Step 5: Solve for x
   x = 42,660,820.75/7,154.02
6. Step 6: Final answer
   x = 5,963.20