Finding the Fourth Proportional to 13,055.38, 18,014.61 and 7,678.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,055.38 : 18,014.61 = 7,678.06 : x
2. Step 2: Convert to fraction form
   13,055.38/18,014.61 = 7,678.06/x
3. Step 3: Cross multiply
   13,055.38x = 18,014.61 × 7,678.06
4. Step 4: Simplify right side
   13,055.38x = 138,317,256.46
5. Step 5: Solve for x
   x = 138,317,256.46/13,055.38
6. Step 6: Final answer
   x = 10,594.66