Finding the Fourth Proportional to 13,054.89, 18,003.51 and 10,065.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,054.89 : 18,003.51 = 10,065.99 : x
2. Step 2: Convert to fraction form
   13,054.89/18,003.51 = 10,065.99/x
3. Step 3: Cross multiply
   13,054.89x = 18,003.51 × 10,065.99
4. Step 4: Simplify right side
   13,054.89x = 181,223,151.62
5. Step 5: Solve for x
   x = 181,223,151.62/13,054.89
6. Step 6: Final answer
   x = 13,881.63