Finding the Fourth Proportional to 20,612.30, 30,900.12 and 7,461.76

Step by Step Solution

1. Step 1: Write the proportion equation
   20,612.30 : 30,900.12 = 7,461.76 : x
2. Step 2: Convert to fraction form
   20,612.30/30,900.12 = 7,461.76/x
3. Step 3: Cross multiply
   20,612.30x = 30,900.12 × 7,461.76
4. Step 4: Simplify right side
   20,612.30x = 230,569,279.41
5. Step 5: Solve for x
   x = 230,569,279.41/20,612.30
6. Step 6: Final answer
   x = 11,186.00