Finding the Fourth Proportional to 22,558.68, 31,130.86 and 12,995.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,558.68 : 31,130.86 = 12,995.12 : x
2. Step 2: Convert to fraction form
   22,558.68/31,130.86 = 12,995.12/x
3. Step 3: Cross multiply
   22,558.68x = 31,130.86 × 12,995.12
4. Step 4: Simplify right side
   22,558.68x = 404,549,261.40
5. Step 5: Solve for x
   x = 404,549,261.40/22,558.68
6. Step 6: Final answer
   x = 17,933.20