Finding the Fourth Proportional to 12,764.05, 19,131.90 and 5,366.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,764.05 : 19,131.90 = 5,366.32 : x
2. Step 2: Convert to fraction form
   12,764.05/19,131.90 = 5,366.32/x
3. Step 3: Cross multiply
   12,764.05x = 19,131.90 × 5,366.32
4. Step 4: Simplify right side
   12,764.05x = 102,667,897.61
5. Step 5: Solve for x
   x = 102,667,897.61/12,764.05
6. Step 6: Final answer
   x = 8,043.52