Finding the Fourth Proportional to 5,269,127.50, 7,903,710.69 and 1,280,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,269,127.50 : 7,903,710.69 = 1,280,039.50 : x
2. Step 2: Convert to fraction form
   5,269,127.50/7,903,710.69 = 1,280,039.50/x
3. Step 3: Cross multiply
   5,269,127.50x = 7,903,710.69 × 1,280,039.50
4. Step 4: Simplify right side
   5,269,127.50x = 10,117,061,879,772.26
5. Step 5: Solve for x
   x = 10,117,061,879,772.26/5,269,127.50
6. Step 6: Final answer
   x = 1,920,063.97