Finding the Fourth Proportional to 13,581,996.38, 18,737,623.81 and 7,700,391.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,581,996.38 : 18,737,623.81 = 7,700,391.98 : x
2. Step 2: Convert to fraction form
   13,581,996.38/18,737,623.81 = 7,700,391.98/x
3. Step 3: Cross multiply
   13,581,996.38x = 18,737,623.81 × 7,700,391.98
4. Step 4: Simplify right side
   13,581,996.38x = 144,287,048,072,279.09
5. Step 5: Solve for x
   x = 144,287,048,072,279.09/13,581,996.38
6. Step 6: Final answer
   x = 10,623,404.99