Finding the Fourth Proportional to 9,123.94, 12,590.92 and 5,146.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.94 : 12,590.92 = 5,146.34 : x
2. Step 2: Convert to fraction form
   9,123.94/12,590.92 = 5,146.34/x
3. Step 3: Cross multiply
   9,123.94x = 12,590.92 × 5,146.34
4. Step 4: Simplify right side
   9,123.94x = 64,797,098.71
5. Step 5: Solve for x
   x = 64,797,098.71/9,123.94
6. Step 6: Final answer
   x = 7,101.88