Finding the Fourth Proportional to 12,931.96, 19,406.04 and 5,910.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.96 : 19,406.04 = 5,910.88 : x
2. Step 2: Convert to fraction form
   12,931.96/19,406.04 = 5,910.88/x
3. Step 3: Cross multiply
   12,931.96x = 19,406.04 × 5,910.88
4. Step 4: Simplify right side
   12,931.96x = 114,706,773.72
5. Step 5: Solve for x
   x = 114,706,773.72/12,931.96
6. Step 6: Final answer
   x = 8,870.02