Finding the Fourth Proportional to 10,139,056.87, 13,992,458.79 and 5,789,540.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139,056.87 : 13,992,458.79 = 5,789,540.34 : x
2. Step 2: Convert to fraction form
   10,139,056.87/13,992,458.79 = 5,789,540.34/x
3. Step 3: Cross multiply
   10,139,056.87x = 13,992,458.79 × 5,789,540.34
4. Step 4: Simplify right side
   10,139,056.87x = 81,009,904,620,492.58
5. Step 5: Solve for x
   x = 81,009,904,620,492.58/10,139,056.87
6. Step 6: Final answer
   x = 7,989,885.61