Finding the Fourth Proportional to 12,156.77, 18,205.74 and 10,061.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156.77 : 18,205.74 = 10,061.34 : x
2. Step 2: Convert to fraction form
   12,156.77/18,205.74 = 10,061.34/x
3. Step 3: Cross multiply
   12,156.77x = 18,205.74 × 10,061.34
4. Step 4: Simplify right side
   12,156.77x = 183,174,140.09
5. Step 5: Solve for x
   x = 183,174,140.09/12,156.77
6. Step 6: Final answer
   x = 15,067.67