Finding the Fourth Proportional to 22,156.77, 30,577.16 and 13,205.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,156.77 : 30,577.16 = 13,205.10 : x
2. Step 2: Convert to fraction form
   22,156.77/30,577.16 = 13,205.10/x
3. Step 3: Cross multiply
   22,156.77x = 30,577.16 × 13,205.10
4. Step 4: Simplify right side
   22,156.77x = 403,774,455.52
5. Step 5: Solve for x
   x = 403,774,455.52/22,156.77
6. Step 6: Final answer
   x = 18,223.53