Finding the Fourth Proportional to 9,123.17, 12,589.23 and 5,345.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.17 : 12,589.23 = 5,345.84 : x
2. Step 2: Convert to fraction form
   9,123.17/12,589.23 = 5,345.84/x
3. Step 3: Cross multiply
   9,123.17x = 12,589.23 × 5,345.84
4. Step 4: Simplify right side
   9,123.17x = 67,300,009.30
5. Step 5: Solve for x
   x = 67,300,009.30/9,123.17
6. Step 6: Final answer
   x = 7,376.82