Finding the Fourth Proportional to 9,977.16, 14,928.79 and 7,346.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,977.16 : 14,928.79 = 7,346.61 : x
2. Step 2: Convert to fraction form
   9,977.16/14,928.79 = 7,346.61/x
3. Step 3: Cross multiply
   9,977.16x = 14,928.79 × 7,346.61
4. Step 4: Simplify right side
   9,977.16x = 109,675,997.90
5. Step 5: Solve for x
   x = 109,675,997.90/9,977.16
6. Step 6: Final answer
   x = 10,992.71