Finding the Fourth Proportional to 5,172,507.05, 7,138,281.15 and 2,880,667.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,172,507.05 : 7,138,281.15 = 2,880,667.76 : x
2. Step 2: Convert to fraction form
   5,172,507.05/7,138,281.15 = 2,880,667.76/x
3. Step 3: Cross multiply
   5,172,507.05x = 7,138,281.15 × 2,880,667.76
4. Step 4: Simplify right side
   5,172,507.05x = 20,563,016,334,929.32
5. Step 5: Solve for x
   x = 20,563,016,334,929.32/5,172,507.05
6. Step 6: Final answer
   x = 3,975,444.82