Finding the Fourth Proportional to 12,942.96, 17,867.72 and 9,893.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.96 : 17,867.72 = 9,893.32 : x
2. Step 2: Convert to fraction form
   12,942.96/17,867.72 = 9,893.32/x
3. Step 3: Cross multiply
   12,942.96x = 17,867.72 × 9,893.32
4. Step 4: Simplify right side
   12,942.96x = 176,771,071.63
5. Step 5: Solve for x
   x = 176,771,071.63/12,942.96
6. Step 6: Final answer
   x = 13,657.70