Finding the Fourth Proportional to 12,977.68, 17,909.22 and 7,675.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,977.68 : 17,909.22 = 7,675.12 : x
2. Step 2: Convert to fraction form
   12,977.68/17,909.22 = 7,675.12/x
3. Step 3: Cross multiply
   12,977.68x = 17,909.22 × 7,675.12
4. Step 4: Simplify right side
   12,977.68x = 137,455,412.61
5. Step 5: Solve for x
   x = 137,455,412.61/12,977.68
6. Step 6: Final answer
   x = 10,591.68