Finding the Fourth Proportional to 17,763,499.90, 26,609,820.45 and 12,378,231.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,763,499.90 : 26,609,820.45 = 12,378,231.10 : x
2. Step 2: Convert to fraction form
   17,763,499.90/26,609,820.45 = 12,378,231.10/x
3. Step 3: Cross multiply
   17,763,499.90x = 26,609,820.45 × 12,378,231.10
4. Step 4: Simplify right side
   17,763,499.90x = 329,382,507,059,606
5. Step 5: Solve for x
   x = 329,382,507,059,606/17,763,499.90
6. Step 6: Final answer
   x = 18,542,658.20