Finding the Fourth Proportional to 12,763.34, 19,145.04 and 3,999.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,763.34 : 19,145.04 = 3,999.02 : x
2. Step 2: Convert to fraction form
   12,763.34/19,145.04 = 3,999.02/x
3. Step 3: Cross multiply
   12,763.34x = 19,145.04 × 3,999.02
4. Step 4: Simplify right side
   12,763.34x = 76,561,397.86
5. Step 5: Solve for x
   x = 76,561,397.86/12,763.34
6. Step 6: Final answer
   x = 5,998.54