Finding the Fourth Proportional to 28,099,298.28, 42,154,963.88 and 8,404,972

Step by Step Solution

1. Step 1: Write the proportion equation
   28,099,298.28 : 42,154,963.88 = 8,404,972 : x
2. Step 2: Convert to fraction form
   28,099,298.28/42,154,963.88 = 8,404,972/x
3. Step 3: Cross multiply
   28,099,298.28x = 42,154,963.88 × 8,404,972
4. Step 4: Simplify right side
   28,099,298.28x = 354,311,291,072,411.38
5. Step 5: Solve for x
   x = 354,311,291,072,411.38/28,099,298.28
6. Step 6: Final answer
   x = 12,609,257.62