Finding the Fourth Proportional to 12,792.90, 17,654.69 and 7,415.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.90 : 17,654.69 = 7,415.51 : x
2. Step 2: Convert to fraction form
   12,792.90/17,654.69 = 7,415.51/x
3. Step 3: Cross multiply
   12,792.90x = 17,654.69 × 7,415.51
4. Step 4: Simplify right side
   12,792.90x = 130,918,518.10
5. Step 5: Solve for x
   x = 130,918,518.10/12,792.90
6. Step 6: Final answer
   x = 10,233.69