Finding the Fourth Proportional to 13,146,413.60, 18,142,989.54 and 7,265,921.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,146,413.60 : 18,142,989.54 = 7,265,921.42 : x
2. Step 2: Convert to fraction form
   13,146,413.60/18,142,989.54 = 7,265,921.42/x
3. Step 3: Cross multiply
   13,146,413.60x = 18,142,989.54 × 7,265,921.42
4. Step 4: Simplify right side
   13,146,413.60x = 131,825,536,321,521.94
5. Step 5: Solve for x
   x = 131,825,536,321,521.94/13,146,413.60
6. Step 6: Final answer
   x = 10,027,490.41