Finding the Fourth Proportional to 12,455,308.32, 17,189,508.60 and 7,809,828.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,455,308.32 : 17,189,508.60 = 7,809,828.72 : x
2. Step 2: Convert to fraction form
   12,455,308.32/17,189,508.60 = 7,809,828.72/x
3. Step 3: Cross multiply
   12,455,308.32x = 17,189,508.60 × 7,809,828.72
4. Step 4: Simplify right side
   12,455,308.32x = 134,247,117,946,967
5. Step 5: Solve for x
   x = 134,247,117,946,967/12,455,308.32
6. Step 6: Final answer
   x = 10,778,305.48