Finding the Fourth Proportional to 7,085,885.55, 9,778,842.52 and 3,989,472.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,085,885.55 : 9,778,842.52 = 3,989,472.86 : x
2. Step 2: Convert to fraction form
   7,085,885.55/9,778,842.52 = 3,989,472.86/x
3. Step 3: Cross multiply
   7,085,885.55x = 9,778,842.52 × 3,989,472.86
4. Step 4: Simplify right side
   7,085,885.55x = 39,012,426,798,300.02
5. Step 5: Solve for x
   x = 39,012,426,798,300.02/7,085,885.55
6. Step 6: Final answer
   x = 5,505,652.97