Finding the Fourth Proportional to 10,520,852.49, 14,528,804.61 and 9,947,674.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,520,852.49 : 14,528,804.61 = 9,947,674.75 : x
2. Step 2: Convert to fraction form
   10,520,852.49/14,528,804.61 = 9,947,674.75/x
3. Step 3: Cross multiply
   10,520,852.49x = 14,528,804.61 × 9,947,674.75
4. Step 4: Simplify right side
   10,520,852.49x = 144,527,822,766,580.59
5. Step 5: Solve for x
   x = 144,527,822,766,580.59/10,520,852.49
6. Step 6: Final answer
   x = 13,737,272.99