Finding the Fourth Proportional to 12,437,123.56, 18,656,354.22 and 3,918,126.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,437,123.56 : 18,656,354.22 = 3,918,126.76 : x
2. Step 2: Convert to fraction form
   12,437,123.56/18,656,354.22 = 3,918,126.76/x
3. Step 3: Cross multiply
   12,437,123.56x = 18,656,354.22 × 3,918,126.76
4. Step 4: Simplify right side
   12,437,123.56x = 73,097,960,713,420.92
5. Step 5: Solve for x
   x = 73,097,960,713,420.92/12,437,123.56
6. Step 6: Final answer
   x = 5,877,400.86