Finding the Fourth Proportional to 9,927.98, 13,701.70 and 5,679.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,927.98 : 13,701.70 = 5,679.43 : x
2. Step 2: Convert to fraction form
   9,927.98/13,701.70 = 5,679.43/x
3. Step 3: Cross multiply
   9,927.98x = 13,701.70 × 5,679.43
4. Step 4: Simplify right side
   9,927.98x = 77,817,846.03
5. Step 5: Solve for x
   x = 77,817,846.03/9,927.98
6. Step 6: Final answer
   x = 7,838.24