Finding the Fourth Proportional to 22,780.02, 31,436.47 and 12,570.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,780.02 : 31,436.47 = 12,570.82 : x
2. Step 2: Convert to fraction form
   22,780.02/31,436.47 = 12,570.82/x
3. Step 3: Cross multiply
   22,780.02x = 31,436.47 × 12,570.82
4. Step 4: Simplify right side
   22,780.02x = 395,182,205.81
5. Step 5: Solve for x
   x = 395,182,205.81/22,780.02
6. Step 6: Final answer
   x = 17,347.75