Finding the Fourth Proportional to 10,123.34, 13,938.42 and 8,607.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123.34 : 13,938.42 = 8,607.92 : x
2. Step 2: Convert to fraction form
   10,123.34/13,938.42 = 8,607.92/x
3. Step 3: Cross multiply
   10,123.34x = 13,938.42 × 8,607.92
4. Step 4: Simplify right side
   10,123.34x = 119,980,804.29
5. Step 5: Solve for x
   x = 119,980,804.29/10,123.34
6. Step 6: Final answer
   x = 11,851.90