Finding the Fourth Proportional to 5,345.98, 7,377.69 and 2,988.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,345.98 : 7,377.69 = 2,988.12 : x
2. Step 2: Convert to fraction form
   5,345.98/7,377.69 = 2,988.12/x
3. Step 3: Cross multiply
   5,345.98x = 7,377.69 × 2,988.12
4. Step 4: Simplify right side
   5,345.98x = 22,045,423.04
5. Step 5: Solve for x
   x = 22,045,423.04/5,345.98
6. Step 6: Final answer
   x = 4,123.74