Finding the Fourth Proportional to 17,499,404.80, 26,249,107.20 and 12,740,492.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,499,404.80 : 26,249,107.20 = 12,740,492.80 : x
2. Step 2: Convert to fraction form
   17,499,404.80/26,249,107.20 = 12,740,492.80/x
3. Step 3: Cross multiply
   17,499,404.80x = 26,249,107.20 × 12,740,492.80
4. Step 4: Simplify right side
   17,499,404.80x = 334,426,561,288,028.19
5. Step 5: Solve for x
   x = 334,426,561,288,028.19/17,499,404.80
6. Step 6: Final answer
   x = 19,110,739.20