Finding the Fourth Proportional to 22,924, 31,635.60 and 12,988

Step by Step Solution

1. Step 1: Write the proportion equation
   22,924 : 31,635.60 = 12,988 : x
2. Step 2: Convert to fraction form
   22,924/31,635.60 = 12,988/x
3. Step 3: Cross multiply
   22,924x = 31,635.60 × 12,988
4. Step 4: Simplify right side
   22,924x = 410,883,172.80
5. Step 5: Solve for x
   x = 410,883,172.80/22,924
6. Step 6: Final answer
   x = 17,923.71