Finding the Fourth Proportional to 12,687,142.78, 19,030,714.17 and 3,102,407.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,687,142.78 : 19,030,714.17 = 3,102,407.52 : x
2. Step 2: Convert to fraction form
   12,687,142.78/19,030,714.17 = 3,102,407.52/x
3. Step 3: Cross multiply
   12,687,142.78x = 19,030,714.17 × 3,102,407.52
4. Step 4: Simplify right side
   12,687,142.78x = 59,041,030,751,978.56
5. Step 5: Solve for x
   x = 59,041,030,751,978.56/12,687,142.78
6. Step 6: Final answer
   x = 4,653,611.28