Finding the Fourth Proportional to 12,345.25, 18,485.82 and 10,366.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,345.25 : 18,485.82 = 10,366.32 : x
2. Step 2: Convert to fraction form
   12,345.25/18,485.82 = 10,366.32/x
3. Step 3: Cross multiply
   12,345.25x = 18,485.82 × 10,366.32
4. Step 4: Simplify right side
   12,345.25x = 191,629,925.58
5. Step 5: Solve for x
   x = 191,629,925.58/12,345.25
6. Step 6: Final answer
   x = 15,522.56