Finding the Fourth Proportional to 12,984,401.70, 19,476,602.55 and 12,431,528.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,984,401.70 : 19,476,602.55 = 12,431,528.10 : x
2. Step 2: Convert to fraction form
   12,984,401.70/19,476,602.55 = 12,431,528.10/x
3. Step 3: Cross multiply
   12,984,401.70x = 19,476,602.55 × 12,431,528.10
4. Step 4: Simplify right side
   12,984,401.70x = 242,123,931,892,856.66
5. Step 5: Solve for x
   x = 242,123,931,892,856.66/12,984,401.70
6. Step 6: Final answer
   x = 18,647,292.15