Finding the Fourth Proportional to 19,111.10, 26,372.43 and 10,613.78

Step by Step Solution

1. Step 1: Write the proportion equation
   19,111.10 : 26,372.43 = 10,613.78 : x
2. Step 2: Convert to fraction form
   19,111.10/26,372.43 = 10,613.78/x
3. Step 3: Cross multiply
   19,111.10x = 26,372.43 × 10,613.78
4. Step 4: Simplify right side
   19,111.10x = 279,911,038.22
5. Step 5: Solve for x
   x = 279,911,038.22/19,111.10
6. Step 6: Final answer
   x = 14,646.51