Finding the Fourth Proportional to 12,977.27, 17,909.00 and 7,312.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,977.27 : 17,909.00 = 7,312.07 : x
2. Step 2: Convert to fraction form
   12,977.27/17,909.00 = 7,312.07/x
3. Step 3: Cross multiply
   12,977.27x = 17,909.00 × 7,312.07
4. Step 4: Simplify right side
   12,977.27x = 130,951,735.52
5. Step 5: Solve for x
   x = 130,951,735.52/12,977.27
6. Step 6: Final answer
   x = 10,090.86