Finding the Fourth Proportional to 22,858.69, 31,547.91 and 12,787.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,858.69 : 31,547.91 = 12,787.69 : x
2. Step 2: Convert to fraction form
   22,858.69/31,547.91 = 12,787.69/x
3. Step 3: Cross multiply
   22,858.69x = 31,547.91 × 12,787.69
4. Step 4: Simplify right side
   22,858.69x = 403,424,893.23
5. Step 5: Solve for x
   x = 403,424,893.23/22,858.69
6. Step 6: Final answer
   x = 17,648.64