Finding the Fourth Proportional to 13,074.68, 18,030.76 and 10,085.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,074.68 : 18,030.76 = 10,085.78 : x
2. Step 2: Convert to fraction form
   13,074.68/18,030.76 = 10,085.78/x
3. Step 3: Cross multiply
   13,074.68x = 18,030.76 × 10,085.78
4. Step 4: Simplify right side
   13,074.68x = 181,854,278.59
5. Step 5: Solve for x
   x = 181,854,278.59/13,074.68
6. Step 6: Final answer
   x = 13,908.89