Finding the Fourth Proportional to 12,895.76, 19,342.56 and 4,130.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,895.76 : 19,342.56 = 4,130.12 : x
2. Step 2: Convert to fraction form
   12,895.76/19,342.56 = 4,130.12/x
3. Step 3: Cross multiply
   12,895.76x = 19,342.56 × 4,130.12
4. Step 4: Simplify right side
   12,895.76x = 79,887,093.91
5. Step 5: Solve for x
   x = 79,887,093.91/12,895.76
6. Step 6: Final answer
   x = 6,194.83