Finding the Fourth Proportional to 7,897,499.60, 10,900,233.24 and 5,420,109.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,897,499.60 : 10,900,233.24 = 5,420,109.20 : x
2. Step 2: Convert to fraction form
   7,897,499.60/10,900,233.24 = 5,420,109.20/x
3. Step 3: Cross multiply
   7,897,499.60x = 10,900,233.24 × 5,420,109.20
4. Step 4: Simplify right side
   7,897,499.60x = 59,080,454,466,269.81
5. Step 5: Solve for x
   x = 59,080,454,466,269.81/7,897,499.60
6. Step 6: Final answer
   x = 7,480,906.29