Finding the Fourth Proportional to 22,548.93, 31,117.57 and 12,478.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,548.93 : 31,117.57 = 12,478.06 : x
2. Step 2: Convert to fraction form
   22,548.93/31,117.57 = 12,478.06/x
3. Step 3: Cross multiply
   22,548.93x = 31,117.57 × 12,478.06
4. Step 4: Simplify right side
   22,548.93x = 388,286,808.37
5. Step 5: Solve for x
   x = 388,286,808.37/22,548.93
6. Step 6: Final answer
   x = 17,219.75