Finding the Fourth Proportional to 12,999.98, 17,932.23 and 7,893.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,999.98 : 17,932.23 = 7,893.74 : x
2. Step 2: Convert to fraction form
   12,999.98/17,932.23 = 7,893.74/x
3. Step 3: Cross multiply
   12,999.98x = 17,932.23 × 7,893.74
4. Step 4: Simplify right side
   12,999.98x = 141,552,271.58
5. Step 5: Solve for x
   x = 141,552,271.58/12,999.98
6. Step 6: Final answer
   x = 10,888.66