Finding the Fourth Proportional to 12,018,853.78, 18,046,290.62 and 10,404,601.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,018,853.78 : 18,046,290.62 = 10,404,601.14 : x
2. Step 2: Convert to fraction form
   12,018,853.78/18,046,290.62 = 10,404,601.14/x
3. Step 3: Cross multiply
   12,018,853.78x = 18,046,290.62 × 10,404,601.14
4. Step 4: Simplify right side
   12,018,853.78x = 187,764,455,957,623.34
5. Step 5: Solve for x
   x = 187,764,455,957,623.34/12,018,853.78
6. Step 6: Final answer
   x = 15,622,492.74