Finding the Fourth Proportional to 12,719.90, 17,554.03 and 7,054.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,719.90 : 17,554.03 = 7,054.27 : x
2. Step 2: Convert to fraction form
   12,719.90/17,554.03 = 7,054.27/x
3. Step 3: Cross multiply
   12,719.90x = 17,554.03 × 7,054.27
4. Step 4: Simplify right side
   12,719.90x = 123,830,867.21
5. Step 5: Solve for x
   x = 123,830,867.21/12,719.90
6. Step 6: Final answer
   x = 9,735.21