Finding the Fourth Proportional to 23,002.86, 31,741.74 and 12,928.98

Step by Step Solution

1. Step 1: Write the proportion equation
   23,002.86 : 31,741.74 = 12,928.98 : x
2. Step 2: Convert to fraction form
   23,002.86/31,741.74 = 12,928.98/x
3. Step 3: Cross multiply
   23,002.86x = 31,741.74 × 12,928.98
4. Step 4: Simplify right side
   23,002.86x = 410,388,321.63
5. Step 5: Solve for x
   x = 410,388,321.63/23,002.86
6. Step 6: Final answer
   x = 17,840.75