Finding the Fourth Proportional to 21,672,080.76, 32,503,146.54 and 12,920,835.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,672,080.76 : 32,503,146.54 = 12,920,835.52 : x
2. Step 2: Convert to fraction form
   21,672,080.76/32,503,146.54 = 12,920,835.52/x
3. Step 3: Cross multiply
   21,672,080.76x = 32,503,146.54 × 12,920,835.52
4. Step 4: Simplify right side
   21,672,080.76x = 419,967,810,325,797.06
5. Step 5: Solve for x
   x = 419,967,810,325,797.06/21,672,080.76
6. Step 6: Final answer
   x = 19,378,287.44