Finding the Fourth Proportional to 9,920,830.48, 13,689,685.74 and 5,570,395

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920,830.48 : 13,689,685.74 = 5,570,395 : x
2. Step 2: Convert to fraction form
   9,920,830.48/13,689,685.74 = 5,570,395/x
3. Step 3: Cross multiply
   9,920,830.48x = 13,689,685.74 × 5,570,395
4. Step 4: Simplify right side
   9,920,830.48x = 76,256,956,997,667.30
5. Step 5: Solve for x
   x = 76,256,956,997,667.30/9,920,830.48
6. Step 6: Final answer
   x = 7,686,549.75