Finding the Fourth Proportional to 12,905,339.32, 19,360,925.34 and 4,269,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905,339.32 : 19,360,925.34 = 4,269,419.50 : x
2. Step 2: Convert to fraction form
   12,905,339.32/19,360,925.34 = 4,269,419.50/x
3. Step 3: Cross multiply
   12,905,339.32x = 19,360,925.34 × 4,269,419.50
4. Step 4: Simplify right side
   12,905,339.32x = 82,659,912,184,640.12
5. Step 5: Solve for x
   x = 82,659,912,184,640.12/12,905,339.32
6. Step 6: Final answer
   x = 6,405,094.06