Finding the Fourth Proportional to 12,720.01, 17,554.51 and 7,055.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,720.01 : 17,554.51 = 7,055.29 : x
2. Step 2: Convert to fraction form
   12,720.01/17,554.51 = 7,055.29/x
3. Step 3: Cross multiply
   12,720.01x = 17,554.51 × 7,055.29
4. Step 4: Simplify right side
   12,720.01x = 123,852,123.58
5. Step 5: Solve for x
   x = 123,852,123.58/12,720.01
6. Step 6: Final answer
   x = 9,736.80