Finding the Fourth Proportional to 15,309,499.67, 21,127,108.42 and 8,433,981.73

Step by Step Solution

1. Step 1: Write the proportion equation
   15,309,499.67 : 21,127,108.42 = 8,433,981.73 : x
2. Step 2: Convert to fraction form
   15,309,499.67/21,127,108.42 = 8,433,981.73/x
3. Step 3: Cross multiply
   15,309,499.67x = 21,127,108.42 × 8,433,981.73
4. Step 4: Simplify right side
   15,309,499.67x = 178,185,646,379,839.25
5. Step 5: Solve for x
   x = 178,185,646,379,839.25/15,309,499.67
6. Step 6: Final answer
   x = 11,638,894.17