Finding the Fourth Proportional to 15,521,443.32, 21,419,611.56 and 8,457,003.12

Step by Step Solution

1. Step 1: Write the proportion equation
   15,521,443.32 : 21,419,611.56 = 8,457,003.12 : x
2. Step 2: Convert to fraction form
   15,521,443.32/21,419,611.56 = 8,457,003.12/x
3. Step 3: Cross multiply
   15,521,443.32x = 21,419,611.56 × 8,457,003.12
4. Step 4: Simplify right side
   15,521,443.32x = 181,145,721,792,108.03
5. Step 5: Solve for x
   x = 181,145,721,792,108.03/15,521,443.32
6. Step 6: Final answer
   x = 11,670,675.08