Finding the Fourth Proportional to 12,464.21, 17,199.64 and 7,158.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,464.21 : 17,199.64 = 7,158.00 : x
2. Step 2: Convert to fraction form
   12,464.21/17,199.64 = 7,158.00/x
3. Step 3: Cross multiply
   12,464.21x = 17,199.64 × 7,158.00
4. Step 4: Simplify right side
   12,464.21x = 123,115,096.57
5. Step 5: Solve for x
   x = 123,115,096.57/12,464.21
6. Step 6: Final answer
   x = 9,877.49