Finding the Fourth Proportional to 10,520,993.55, 14,528,998.50 and 9,947,816.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,520,993.55 : 14,528,998.50 = 9,947,816.38 : x
2. Step 2: Convert to fraction form
   10,520,993.55/14,528,998.50 = 9,947,816.38/x
3. Step 3: Cross multiply
   10,520,993.55x = 14,528,998.50 × 9,947,816.38
4. Step 4: Simplify right side
   10,520,993.55x = 144,531,809,300,108.84
5. Step 5: Solve for x
   x = 144,531,809,300,108.84/10,520,993.55
6. Step 6: Final answer
   x = 13,737,467.73