Finding the Fourth Proportional to 9,123.01, 12,588.76 and 5,345.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.01 : 12,588.76 = 5,345.42 : x
2. Step 2: Convert to fraction form
   9,123.01/12,588.76 = 5,345.42/x
3. Step 3: Cross multiply
   9,123.01x = 12,588.76 × 5,345.42
4. Step 4: Simplify right side
   9,123.01x = 67,292,153.22
5. Step 5: Solve for x
   x = 67,292,153.22/9,123.01
6. Step 6: Final answer
   x = 7,376.09