Finding the Fourth Proportional to 12,900.02, 17,801.52 and 7,311.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900.02 : 17,801.52 = 7,311.02 : x
2. Step 2: Convert to fraction form
   12,900.02/17,801.52 = 7,311.02/x
3. Step 3: Cross multiply
   12,900.02x = 17,801.52 × 7,311.02
4. Step 4: Simplify right side
   12,900.02x = 130,147,268.75
5. Step 5: Solve for x
   x = 130,147,268.75/12,900.02
6. Step 6: Final answer
   x = 10,088.92