Finding the Fourth Proportional to 13,148,411.99, 18,144,460.46 and 7,347,241.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,148,411.99 : 18,144,460.46 = 7,347,241.40 : x
2. Step 2: Convert to fraction form
   13,148,411.99/18,144,460.46 = 7,347,241.40/x
3. Step 3: Cross multiply
   13,148,411.99x = 18,144,460.46 × 7,347,241.40
4. Step 4: Simplify right side
   13,148,411.99x = 133,311,730,944,916.52
5. Step 5: Solve for x
   x = 133,311,730,944,916.52/13,148,411.99
6. Step 6: Final answer
   x = 10,138,998.62