Finding the Fourth Proportional to 3,931,499.76, 5,425,644.30 and 2,212,731.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931,499.76 : 5,425,644.30 = 2,212,731.60 : x
2. Step 2: Convert to fraction form
   3,931,499.76/5,425,644.30 = 2,212,731.60/x
3. Step 3: Cross multiply
   3,931,499.76x = 5,425,644.30 × 2,212,731.60
4. Step 4: Simplify right side
   3,931,499.76x = 12,005,494,592,969.88
5. Step 5: Solve for x
   x = 12,005,494,592,969.88/3,931,499.76
6. Step 6: Final answer
   x = 3,053,667.89