Finding the Fourth Proportional to 12,941.78, 19,407.88 and 4,619.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,941.78 : 19,407.88 = 4,619.57 : x
2. Step 2: Convert to fraction form
   12,941.78/19,407.88 = 4,619.57/x
3. Step 3: Cross multiply
   12,941.78x = 19,407.88 × 4,619.57
4. Step 4: Simplify right side
   12,941.78x = 89,656,060.21
5. Step 5: Solve for x
   x = 89,656,060.21/12,941.78
6. Step 6: Final answer
   x = 6,927.65