Finding the Fourth Proportional to 12,054.56, 18,085.10 and 10,897.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,054.56 : 18,085.10 = 10,897.88 : x
2. Step 2: Convert to fraction form
   12,054.56/18,085.10 = 10,897.88/x
3. Step 3: Cross multiply
   12,054.56x = 18,085.10 × 10,897.88
4. Step 4: Simplify right side
   12,054.56x = 197,089,249.59
5. Step 5: Solve for x
   x = 197,089,249.59/12,054.56
6. Step 6: Final answer
   x = 16,349.77