Finding the Fourth Proportional to 9,123.18, 12,587.10 and 5,343.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.18 : 12,587.10 = 5,343.76 : x
2. Step 2: Convert to fraction form
   9,123.18/12,587.10 = 5,343.76/x
3. Step 3: Cross multiply
   9,123.18x = 12,587.10 × 5,343.76
4. Step 4: Simplify right side
   9,123.18x = 67,262,441.50
5. Step 5: Solve for x
   x = 67,262,441.50/9,123.18
6. Step 6: Final answer
   x = 7,372.70