Finding the Fourth Proportional to 10,298.34, 14,125.59 and 9,928.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,298.34 : 14,125.59 = 9,928.98 : x
2. Step 2: Convert to fraction form
   10,298.34/14,125.59 = 9,928.98/x
3. Step 3: Cross multiply
   10,298.34x = 14,125.59 × 9,928.98
4. Step 4: Simplify right side
   10,298.34x = 140,252,700.60
5. Step 5: Solve for x
   x = 140,252,700.60/10,298.34
6. Step 6: Final answer
   x = 13,618.96