Finding the Fourth Proportional to 12,109,689.30, 18,164,096.55 and 4,921,020.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109,689.30 : 18,164,096.55 = 4,921,020.30 : x
2. Step 2: Convert to fraction form
   12,109,689.30/18,164,096.55 = 4,921,020.30/x
3. Step 3: Cross multiply
   12,109,689.30x = 18,164,096.55 × 4,921,020.30
4. Step 4: Simplify right side
   12,109,689.30x = 89,385,887,853,709.97
5. Step 5: Solve for x
   x = 89,385,887,853,709.97/12,109,689.30
6. Step 6: Final answer
   x = 7,381,352.70